(d) Where will the randomization distribution be centered? center i eTextbook and Media Hint * Your answer is incorrect. (e) Find one point on the randomization distribution by randomly dividing the 24 data values into two groups. Compute the sample mean in each group, and compute the difference in the sample means for this simulated result. Round your answer to the nearest integer. The difference in the sample means is i
(d) Where will the randomization distribution be centered? center i eTextbook and Media Hint * Your answer is incorrect. (e) Find one point on the randomization distribution by randomly dividing the 24 data values into two groups. Compute the sample mean in each group, and compute the difference in the sample means for this simulated result. Round your answer to the nearest integer. The difference in the sample means is i
Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
Problem 4SE: What is the difference between events and outcomes? Give an example of both using the sample space...
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Question
10
Transcribed Image Text:(d) Where will the randomization distribution be centered?
center
i
eTextbook and Media
Hint
* Your answer is incorrect.
(e) Find one point on the randomization distribution by randomly dividing the 24 data values into two groups. Compute the
sample mean in each group, and compute the difference in the sample means for this simulated result.
Round your answer to the nearest integer.
The difference in the sample means is i
Transcribed Image Text:A study is conducted in which a random sample of 24 adults are divided equally into two groups and given a list of 24 words to
memorize. During a break, one group takes a 90 minute nap while another group is given a caffeine pill. The response variable of
interest is the number of words participants are able to recall following the break. We are testing to see if there is a difference in the
average number of words a person can recall depending on whether the person slept or ingested caffeine. The data ¹ are shown in
Table 1 below.
Sleep
Caffeine
14 18 11
12
12
14
13
13
18
6
17 21
18 14 16
9
16 17
7
10
Table 1: Number of words recalled
14
15
15
10
Mean 15.25
Mean = 12.25
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