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For a two-tailed hypothesis test at the significance level a, the null hypothesis Ho: H= Ho will be rejected in favor of the alternative hypothesis Ha: µ# Ho if and only if Ho lies outside the (1 – a)-level confidence interval for u. Illustrate the preceding relationship by obtaining the appropriate one-mean z-interval for the situations described in parts (a) and (b) below. Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. a. The average lactation (nursing) period of all earless seals is 23 days. For a sample of 15 female grey seals, the average lactation period is 20.8 days. It is assumed that the population standard deviation is 3.0 days. At the 5% significance level, the data provide sufficient evidence to conclude that the mean lactation period of grey seals differs from 23 days. The confidence interval is (. ). (Round to two decimal places as needed.)

For a two-tailed hypothesis test at the significance level a, the null hypothesis Ho: H= Ho will be rejected in favor of the alternative hypothesis Ha: µ# Ho if and only if Ho lies outside the (1 – a)-level confidence interval for u. Illustrate the preceding relationship by obtaining the appropriate one-mean z-interval for the situations described in parts (a) and (b) below. Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. a. The average lactation (nursing) period of all earless seals is 23 days. For a sample of 15 female grey seals, the average lactation period is 20.8 days. It is assumed that the population standard deviation is 3.0 days. At the 5% significance level, the data provide sufficient evidence to conclude that the mean lactation period of grey seals differs from 23 days. The confidence interval is (. ). (Round to two decimal places as needed.)

MATLAB: An Introduction with Applications
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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Since the population mean in the confidence interval, this sufficient evidence to conclude that the average lactation period of grey seals differs from 23 days. This the same conclusion reached by the hypothesis test.
Transcribed Image Text:Since the population mean in the confidence interval, this sufficient evidence to conclude that the average lactation period of grey seals differs from 23 days. This the same conclusion reached by the hypothesis test.
For a two-tailed hypothesis test at the significance level a, the null hypothesis Ho: µ= Ho will be rejected in favor of the alternative hypothesis Ha: µ# Ho if and only if Ho lies outside the (1 – a)-level confidence interval for µ. Illustrate the preceding relationship by obtaining the appropriate one-mean z-interval for the situations described in parts (a) and (b) below. Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. ..... a. The average lactation (nursing) period of all earless seals is 23 days. For a sample of 15 female grey seals, the average lactation period is 20.8 days. It is assumed that the population standard deviation is 3.0 days. At the 5% significance level, the data provide sufficient evidence to conclude that the mean lactation period of grey seals differs from 23 days. The confidence interval is (Round to two decimal places as needed.)
Transcribed Image Text:For a two-tailed hypothesis test at the significance level a, the null hypothesis Ho: µ= Ho will be rejected in favor of the alternative hypothesis Ha: µ# Ho if and only if Ho lies outside the (1 – a)-level confidence interval for µ. Illustrate the preceding relationship by obtaining the appropriate one-mean z-interval for the situations described in parts (a) and (b) below. Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. ..... a. The average lactation (nursing) period of all earless seals is 23 days. For a sample of 15 female grey seals, the average lactation period is 20.8 days. It is assumed that the population standard deviation is 3.0 days. At the 5% significance level, the data provide sufficient evidence to conclude that the mean lactation period of grey seals differs from 23 days. The confidence interval is (Round to two decimal places as needed.)
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