A primatologist believes that rhesus monkeys possess curiosity. She reasons that, if this is true, then they should prefer novel stimulation to repetitive stimulation. An experiment is conducted in which 12 rhesus monkeys are randomly selected from the university colony and taught to press two bars. Pressing bar 1 always produces the same sound, whereas bar 2 produces a novel sound each time it is pressed. After learning to press the bars, the monkeys are tested for 15 minutes, during which they have free access to both bars. The number of presses on each bar during the 15 minutes is recorded. The resulting data are as follows:What is the alternative hypothesis? In this case, assume a nondirectional hypothesis is appropriate because there is insufficient empirical basis to warrant a directional hypothesis. What is the null hypothesis? Using ? = 0.052 tail, what is your conclusion? What error might you be making by your conclusion in part c?
Subject Bar 1 Bar 2
1 20 40
2 18 25
3 24 38
4 14 27
5 5 31
6 26 21
7 15 32
8 29 38
9 15 25
10 9 18

Answers

Answer 1

Answer:

It is statistically significant that mean of difference scores is different from 0

Step-by-step explanation:

Subject    Bar 1      Bar 2      Difference

1                 20          40            20

2                 18          25             7

3                 24          38            14

4                 14           27            13

5                 5            31             29

6                 26          21             -5

7                 15           32            17

8                 29          38            9

9                 15           25           10

10                9             18           9

Mean of difference =[tex]\frac{Sum}{10}=\frac{123}{10}=12.3[/tex]

Standard deviation s =[tex]\sqrt{\frac{(x_i-\bar{x})^2}{n}}=8.93[/tex]

Null Hypothesis : mean of difference scores is 0 : [tex]H_0:\mu=0[/tex]

Alternate Hypothesis : mean of difference scores is different from 0 : [tex]H_a:\mu \neq 0[/tex]

We will use t test for unpaired

[tex]t = \frac{x-\mu}{\sqrt{\frac{s^2}{n-1}}}\\t = \frac{12.3-0}{\sqrt{\frac{8.93^2}{10-1}}}\\t=4.13[/tex]

Level of significance (two tailed) =[tex]\alpha = 0.05[/tex]

Degree of freedom = n-1 = 10-1 =9

Using calculator

The p-value is .002559.

p value < α

So ,we reject null hypothesis

So, It is statistically significant that mean of difference scores is different from 0


Related Questions

Graph the function y = -1x +3.​

Answers

Answer:

draw a point at the (0,3). That is your y intercept and now go down one and over to the right 1 time. Continue this process and connect the dots

that is your line

Step-by-step explanation:

I guess that mean hold him down if he say he can’t breathe

Answers

Answer:

[tex]this \: proberbility \: is \: \frac{2}{5} [/tex]

The probability is 2/5

John has $100 in his bank account, and is spending $3 a day on lunch. How long until he has $55 in his account?​

Answers

Answer:

15 days

Step-by-step explanation:

We know that John has $100 in his bank account and he is spending $3 a day.

We want to find how many days until he has $55 left.

d=days

55=100-3d

55+3d=100

100-55=3d

3d=45

Solving for d, we divide by 3.

Your answer is 15.

Which situation can be represented by this inequality?
3 + 2.0 > 8x
Select one:
The cost of 2 candy bars plus a $3 bag of chips is greater than 8 candy bars.
The cost of 2 candy bars with a discount of $3 is greater than 8 candy bars.
o The cost of a $3 bag of chips plus 2 candy bars is at least as much as 8 candy bars.
The cost of a $3 bag of chips plus 2 candy bars is less than 8 candy bars.

Answers

Answer: D

Step-by-step explanation:

Jacob rides his bike 4 miles in 15 minutes. The ratio of miles to minutes is 4 to 15. How many minutes would it take Jacob to ride his bike 12 miles.

Answers

Answer:

180 minutes

Step-by-step explanation:

true or false. The value -5 is an element of the solution set for the inequality x<-3​

Answers

No because -3 is more than -5

Answer: It’s True

The explanation: I did this already and I got an 100% I hope this helps I you have other questions just ask me! Hope you get a good score!

Which arrangement shows 27/5, 5.36, 5 3/5, 33/6 in order from least to greatest?

Answers

Answer:

5.36 < 27/5 < 33/6 < 5 3/5 or 5.36, 27/5, 33/6, 5 3/5

Step-by-step explanation:

Please answer this (Middle school math)

Answers

Answer:

the first one

Step-by-step explanation: what school you go too

What quadrant would the triangle be in after a rotation of 90 counterclockwise about the origin?

Answers

Answer: Quadrant IV
It rotates to the right side once

what would be the best first step to solving j+18/-4=8:
-add 18 to both sides
-subtract 18 from both sides
-multiply both sides by 4
-multiply both sides by -4
(choose 1)

Answers

Subtract 18 from both sides

David earns 8$ per hour. He works 40 hours each week. How much does he earn in 6 weeks?

Answers

Answer:

$1920

Step-by-step explanation:

40×8= 320

320×6= 1920

Hope this helps!! :)

$1920

8x40x6

8=dollars
40=hours each week
6=weeks

If you have a box of candy that is 8 inches long, 5 inches wide, and 2

inches tall, how much space do you have for candy?

Answers

80 sq cubed you multiply all three numbers to find the valume.

Write it slope intercept form:
Slope= -1 Y intercept= 8

Answers

Answer:

y = -x + 8

Step-by-step explanation:

Slope-intercept form is:

y = mx + b

where m is the slope and b is the y-intercept.

We are given that the slope is -1 and the y-intercept is 8. We are asked to write the information in slope-intercept form. To do this, lets plug in -1 for m, the slope, and 8 for b, the y-intercept, into the equation for slope-intercept form.

y = mx + b

y = -1x + 8

y = -x + 8

So the slope intercept form would be y = -x + 8.

I hope you find my answer and explanation to be helpful. Happy studying.

Slope is -1 and Y inercept is 8 so the slope is y=-x+8.

Test Practice
14. Which set of numbers correctly shows all of the factors of 28?
A 1, 2, 4, 7, 14, 28 © 1, 2, 7, 14, 28
® 0, 1, 7, 14, 28 0 1, 2, 4, 7, 8, 14, 28

Answers

A because I just know


John increased the amount of water he drinks every day from 20 fluid ounces to 48
fluid Ounces. By what percentages did John increases the water he drinks?

Answers

Answer:

89

Step-by-step explanation:

i need help too

-2(3x + 6) > 4(x + 7)

Answers

Answer:

6x+6>4x+28

Step-by-step explanation:

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[tex] - 6x - 12 > 4x + 28[/tex]

Add sides 6x

[tex] - 6x + 6x - 12 > 4x + 6x + 28\\ [/tex]

[tex] - 12 > 10x + 28[/tex]

Subtract sides -28

[tex] - 12 - 28 > 10x + 28 - 28[/tex]

[tex] - 40 > 10x[/tex]

Divided sides by 10

[tex] \frac{ - 40}{10} > \frac{10}{10}x \\ [/tex]

[tex] - 4 > x[/tex]

[tex]x < - 4[/tex]

Done...

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What is the slope of the linr passing through thr points (0, 4) and (-8, -1)

Answers

Answer:

H4 sch nxmbd. Xhdnfcjnnccggj jjiihvfh

Jenny & Natasha are working on a problem together: Solve 3+8=−2. Natasha thinks the first step is to multiply by 3. Jenny explains that this is not the most efficient way to solve. Explain who is correct & justify your reasoning.

Answers

This is the correct way to solve the problem :

You add 3 and 8 together.

you see if it equals -2 or not.

I hope this helps!

Answer:

jenny the first step is to subtract 8

Step-by-step explanation:

2/3 x - 1 = 9 - 1/6 x Im supposed to solve but i need some help

Answers

Answer:

x=12

Step-by-step explanation:

collect the x stuff on one side

2/3 x + 1/6 x = 9 + 1

5/6 x = 10

x = 12

Answer:

x=12

Step-by-step explanation:

first, you need to get the variable to one side

the easiest way to do it and not deal with negatives would be this way:

2/3x - 1 = 9 - 1/6x

+1/6x            +1/6x           in order to do this you must first convert the 2/3 to 4/6

to then get

5/6x - 1 = 9

then solve it like normal

5/6x - 1 = 9

       +1     +1

5/6x = 10

/ 5/6   /5/6

x=12

Which expression has the same meaning as p 11/5?

Answers

Answer:

Under the first one

Step-by-step explanation:

The expression ⁵√p¹¹ is equivalent to the given expression. The correct answer would be an option (C).

What are exponential expressions?

Exponential expressions, as the name indicates, involve exponents. We already know that the exponent of a number (base) specifies how many times the number (base) has been multiplied.

The exponential expression is given in the question, as follows:

[tex]p^\frac{11}{5}[/tex]

We have to determine the equivalent expression to the given expression.

As per option (C), we have

⇒ ⁵√p¹¹

The above expression also can be written as:

⇒ [tex](p^{11})^\frac{1}{5}[/tex]

⇒ [tex](p^{11})^{\times}{(\frac{1}{5})}[/tex]

⇒ [tex]p^\frac{11}{5}[/tex]

Hence, we can conclude that the expression ⁵√p¹¹ is equivalent to the given expression.

Learn more about exponential function here:

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5x-(x-2) ≥ 2x-4(x-8)

Answers

Answer:

x>5

Step-by-step explanation:

1. Which inequality represents the following statement? Two times the quantity x plus 4 is greater than 10.

a.2x + 4 > 10
b.2(x + 4) > 10
c.x+4 > 10
d.2(x + 4) = 10​

Answers

The second one most likely if gt means greater than

please help me asap​

Answers

< because 7/10 is bigger than 5/8

if syringes cost 2.10 dollars a dozen how many would 40 cost

Answers

Answer:

Step-by-step explanation:

It’s $6.82 I believe

you got to add $2.10 three times and you get $6.30

then divide the 2.10 with the remaining 4 syringes and youll get $6.82

Hope this helped

Look it up on google

there are 3 people at a party if each person must shake hands with every other person at the party exactly once how many handshakes will there be​

Answers

Answer:

there will be 9

Step-by-step explanation:

Tom counted a total of 45 birds and squirrels at the park. There were 4 times as many birds as squirrels. How many birds did Tom count?

Answers

Answer:

9 squirrels and 36 birds

Step-by-step explanation:

4x+x=45

5x=45

x=9

4*9=36

Question 4 of 5
Quadrilateral ABCD is reflected across the x-axis. What are the coordinates
of quadrilateral ABCD?
ADLY
01/2)
ch
A. A (5,5), B (5, 1), C(2, 1), D' (1,5)
B. A' (5-5), 8 (1.-5), C'(1, -2).
D'(5-1)
C. A'(-5-5), 8'(-1,-5), C (-1.-2)
D'(-5-1)
OD. A (5,5), B'(1,5), C' (1,2), D'(5, 1)

Answers

it will definitely be C

any time there it a reflection across the x-axis the coordinates then become (x,-y)

you roll three six sided dice. what is the probability that exactly two of the dice are odd?

Answers

Answer:

3C2 * (.5)^2 * (.5)^1

.375

Step-by-step explanation:

...

The probability that exactly two of the dice are odd is 3/8

What is probability?

"It is finding out the possibilities of the occurrence of an event."

Formula to find the probability of an event:

"P(A) = n(A) / n(S)

where, n(A) is the number of favorable outcomes of an event A

n(S) is the total number of outcomes for an experiment"

What is Binomial theorem of probability?

[tex]P=~ ^nC_r\times p^r \times q^{n-r}[/tex]

where, p is the probability of success and q is the probability of failure

For given example,

We roll three six sided dice.

We need to find the probability that exactly two of the dice are odd

the probability of success i. e. dice is odd would be,

⇒ p = 3/6

⇒ p = 1/2

So, the probability of failure would be,

⇒ q = 1 - p

⇒ q = 1 - 1/2

⇒ q = 1/2

Also, n = 3 and r = 2

Using Binomial distribution the required probability would be,

[tex]\Rightarrow P=~ ^nC_r\times p^r \times q^{n-r}\\\\\Rightarrow P=~ ^3C_2\times (\frac{1}{2} )^2 \times (\frac{1}{2} )^{3-2}\\\\\Rightarrow P =\frac{3!}{3!(3-2)!}\times \frac{1}{4} \times \frac{1}{2}\\\\ \Rightarrow \bold{P=\frac{3}{8}}[/tex]

Therefore, the probability that exactly two of the dice are odd is 3/8

Learn more about the probability here:

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5. What is the probability of rolling a 4 on a number
cube and pulling a red marble out of a bag that
contains 3 red, 2 black, and 5 yellow marbles?

Answers

The probability of rolling a 4 on a number cube and pulling a red marble out of the bag is 1/20.

What is probability?

Probability is a measure of the likelihood or chance of an event occurring. It is a number between 0 and 1, with 0 representing an impossible event and 1 representing a certain event. The probability of an event is calculated by dividing the number of ways the event can occur by the total number of possible outcomes.

The probability of rolling a 4 on a number cube is 1/6, since there is one way to roll a 4 out of six possible outcomes (1, 2, 3, 4, 5, 6).

The probability of pulling a red marble out of the bag is 3/10, since there are three red marbles out of a total of ten marbles.

To find the probability of both events happening (rolling a 4 and pulling a red marble), we multiply the probabilities:

(1/6) x (3/10) = 1/20

Therefore, the probability of rolling a 4 on a number cube and pulling a red marble out of the bag is 1/20.

To know more about probability visit :

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5 2/5 as a mixed number

Answers

Answer:

Mixed numbers have a whole number followed by the fraction (2 1/2). You would say "two and one half." The other format is an improper fraction where the numerator is greater than the denominator (5/2). Mathematicians would say that is five halves.

Answer:

27/5 I think um I have to fill out the question so ya

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