Consider the following hypothesis test. Ho: µ 1 - µ 2 = 0 Ha: µ 1 - µ 2 0 The following results are from independent samples taken from two populations. Sample 1 Sample 2 ni = 35 n 2 = 40 | X 1 = 13.6 X 2 = 10.1 S 1 = 5.3 S 2 = 8.6 a. What is the value of the test statistic (to 2 decimals)? b. What is the degrees of freedom for the t distribution? (Round down your answer to the whole number) c. What is the p-value? Use z-table. The area in the upper tail is Select ; two-tailed p-value is between select d. At a = .05, what is your conclusion? p-value is Select Но

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Consider the following hypothesis test.
Ho: u 1 - µ 2 = 0
Hạ: µ 1 - µ 2 ± 0
The following results are from independent samples taken from two
populations.
Sample 1
Sample 2
ni = 35
n 2 = 40
X 1 = 13.6
X 2 = 10.1
S 1 = 5.3
S 2 = 8.6
a. What is the value of the test statistic (to 2 decimals)?
b. What is the degrees of freedom for thet distribution? (Round down your
answer to the whole number)
c. What is the p-value? Use z-table.
The area in the upper tail is Select
; two-tailed p-value is
between select
d. At a = .05, what is your conclusion?
p-value is Select
v Ho
Transcribed Image Text:Consider the following hypothesis test. Ho: u 1 - µ 2 = 0 Hạ: µ 1 - µ 2 ± 0 The following results are from independent samples taken from two populations. Sample 1 Sample 2 ni = 35 n 2 = 40 X 1 = 13.6 X 2 = 10.1 S 1 = 5.3 S 2 = 8.6 a. What is the value of the test statistic (to 2 decimals)? b. What is the degrees of freedom for thet distribution? (Round down your answer to the whole number) c. What is the p-value? Use z-table. The area in the upper tail is Select ; two-tailed p-value is between select d. At a = .05, what is your conclusion? p-value is Select v Ho
The U.S. Department of Transportation provides the number of miles that
residents of the 75 largest metropolitan areas travel per day in a car. Suppose
that for a simple random sample of 70 Buffalo residents the mean is 22.6 miles
a day and the standard deviation is 8.5 miles a day, and for an independent
simple random sample of 40 Boston residents the mean is 18.6 miles a day an
the standard deviation is 7.8 miles a day.
Round your answers to one decimal place.
a. What is the point estimate of the difference between the mean number of
miles that Buffalo residents travel per day and the mean number of miles that
Boston residents travel per day?
b. What is the 95% confidence interval for the difference between the two
population means? Use z-table.
to
Transcribed Image Text:The U.S. Department of Transportation provides the number of miles that residents of the 75 largest metropolitan areas travel per day in a car. Suppose that for a simple random sample of 70 Buffalo residents the mean is 22.6 miles a day and the standard deviation is 8.5 miles a day, and for an independent simple random sample of 40 Boston residents the mean is 18.6 miles a day an the standard deviation is 7.8 miles a day. Round your answers to one decimal place. a. What is the point estimate of the difference between the mean number of miles that Buffalo residents travel per day and the mean number of miles that Boston residents travel per day? b. What is the 95% confidence interval for the difference between the two population means? Use z-table. to
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