Consider the following hypothesis test. Ho: µ 1 - µ 2 < 0 Hạ: µ 1 - µ 2 > 0 he following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n 1 = 40 n 2 = 70 X 1 = 25.2 X 2 = 22.9 0 1 = 5.2 0 2 = 7 1. What is the value of the test statistic (round to 2 decimals)?

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Consider the following hypothesis test.
Ho: µ 1 - l 2 < 0
Ha: u 1 - H 2 > 0
The following results are for two independent samples taken from the two populations.
Sample 1
Sample 2
n 1 = 40
n 2 = 70
X 1 = 25.2
X 2 = 22.9
Ở 1 = 5.2
O 2 = 7
a. What is the value of the test statistic (round to 2 decimals)?
b. What is the p-value (round to 4 decimals)? Use z-table. Use z-value rounded to 2 decimal places.
c. With a = .05, what is your hypothesis testing conclusion?
p-value is sSelect
V Ho
Transcribed Image Text:Consider the following hypothesis test. Ho: µ 1 - l 2 < 0 Ha: u 1 - H 2 > 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 n 1 = 40 n 2 = 70 X 1 = 25.2 X 2 = 22.9 Ở 1 = 5.2 O 2 = 7 a. What is the value of the test statistic (round to 2 decimals)? b. What is the p-value (round to 4 decimals)? Use z-table. Use z-value rounded to 2 decimal places. c. With a = .05, what is your hypothesis testing conclusion? p-value is sSelect V Ho
Consider the following results for two independent random samples taken from two populations.
Sample 1
Sample 2
n 1 = 50
n 2 = 30
X 1 = 13.9
X 2 = 11.2
O 1 = 2,4
O 2 = 3.5
a. What is the point estimate of the difference between the two population means? (to 1 decimal)
b. Provide a 90% confidence interval for the difference between the two population means (to 2 decimals). Use z-table.
c. Provide a 95% confidence interval for the difference between the two population means (to 2 decimals). Use z-table. If your
answer is negative, enter minus (-) sign.
Transcribed Image Text:Consider the following results for two independent random samples taken from two populations. Sample 1 Sample 2 n 1 = 50 n 2 = 30 X 1 = 13.9 X 2 = 11.2 O 1 = 2,4 O 2 = 3.5 a. What is the point estimate of the difference between the two population means? (to 1 decimal) b. Provide a 90% confidence interval for the difference between the two population means (to 2 decimals). Use z-table. c. Provide a 95% confidence interval for the difference between the two population means (to 2 decimals). Use z-table. If your answer is negative, enter minus (-) sign.
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