group able. Assume that the two samples are independent simple random samples μ d from normally distributed populations, and do not assume that the population n d deviations are equal. Use a 0.05 significance level for both parts. X S statistic, t, is type your answer... two decimal places as needed.) alue is type your answer H1 25 2.38 0.91 H₂ 40 2.62 0.61

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A study was done using a treatment group and a placebo group. The results are shown
in the table. Assume that the two samples are independent simple random samples
selected from normally distributed populations, and do not assume that the population
standard deviations are equal. Use a 0.05 significance level for both parts.
The test statistic, t, is type your answer...
(Round to two decimal places as needed.)
The P-value is type your answer...
(Round to three decimal places as needed.)
1
n
X
S
Treatment Placebo
H₁
H₂
25
40
2.38
2.62
0.91
0.61
Transcribed Image Text:A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Use a 0.05 significance level for both parts. The test statistic, t, is type your answer... (Round to two decimal places as needed.) The P-value is type your answer... (Round to three decimal places as needed.) 1 n X S Treatment Placebo H₁ H₂ 25 40 2.38 2.62 0.91 0.61
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