Provided below are summary statistics for independent simple random samples from two populations. Use the pooled t-test and the pooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. x, = 22, s, = 5, n, = 19, x2 = 23, s2 = 4, n2 = 15 a. Left-tailed test, a=0.05 b. 90% confidence interval a. What are the correct hypotheses for a left-tailed test? O A. Ho: H1 * P2 O B. Ho: P1 =Hz Ha H1 = 2 OC. Ho: H1 P2 O E. Ho: H1 = P2 OF. Ho: H1 = 42 Compute the test statistic. (Round to three decimal places as needed.) Determine the P-value. P= (Round to four decimal places as needed.) Since the P-value is v than a, v Họ. b. The 90% confidence interval is from to (Round to three decimal places as needed.)
Provided below are summary statistics for independent simple random samples from two populations. Use the pooled t-test and the pooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. x, = 22, s, = 5, n, = 19, x2 = 23, s2 = 4, n2 = 15 a. Left-tailed test, a=0.05 b. 90% confidence interval a. What are the correct hypotheses for a left-tailed test? O A. Ho: H1 * P2 O B. Ho: P1 =Hz Ha H1 = 2 OC. Ho: H1 P2 O E. Ho: H1 = P2 OF. Ho: H1 = 42 Compute the test statistic. (Round to three decimal places as needed.) Determine the P-value. P= (Round to four decimal places as needed.) Since the P-value is v than a, v Họ. b. The 90% confidence interval is from to (Round to three decimal places as needed.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Provided below are summary statistics for independent simple random samples from two populations. Use the pooled t-test and the pooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence
interval.
X1 = 22, s1 = 5, n = 19, x2 = 23, s2 = 4, n2 = 15
a. Left-tailed test, a = 0.05
b. 90% confidence interval
.....
a. What are the correct hypotheses for a left-tailed test?
O A. Ho: H17 H2
Ha: H1 = H2
O B. Ho: H1 = H2
Ha: H1 # H2
O C. Ho: H1 <H2
Ha: H1 = H2
O D. Ho: H1 > H2
Ha: H1 = H2
O E. Ho: H1 = H2
F. Ho: H1 = H2
Ha: H1> H2
Ha: H1 <H2
Compute the test statistic.
t=
(Round to three decimal places as needed.)
Determine the P-value.
P =
(Round to four decimal places as needed.)
Since the P-value is
than a,
Ho.
b. The 90% confidence interval is from
to
(Round to three decimal places as needed.)
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