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• The test statistic has a normal distribution and the value is given by z= Normal Distribution Step 1: Select one-tailed or two-tailed. O One-tailed 0.3- O Two-tailed Step 2: Enter the critical value(s). 0.2+ (Round to 3 decimal places.) 0.1- Step 3: Enter the test statistic. (Round to 3 decimal places.) 15

• The test statistic has a normal distribution and the value is given by z= Normal Distribution Step 1: Select one-tailed or two-tailed. O One-tailed 0.3- O Two-tailed Step 2: Enter the critical value(s). 0.2+ (Round to 3 decimal places.) 0.1- Step 3: Enter the test statistic. (Round to 3 decimal places.) 15

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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test. Zo 05 is the value that cuts off an area of 0.05 in the right tail. • The test statistic has a normal distribution and the value is given by z= In Normal Distribution 04 Step 1: Select one-tailed or two-tailed. O One-tailed 0.3+ O Two-tailed Step 2: Enter the critical value(s). (Round to 3 decimal places.) 0.2 + 0.1- Step 3: Enter the test statistic. (Round to 3 decimal places.) Save For Later Su Check 02021 McGraw-Hill Education. All Rights Reserved. Terms of Use
Transcribed Image Text:test. Zo 05 is the value that cuts off an area of 0.05 in the right tail. • The test statistic has a normal distribution and the value is given by z= In Normal Distribution 04 Step 1: Select one-tailed or two-tailed. O One-tailed 0.3+ O Two-tailed Step 2: Enter the critical value(s). (Round to 3 decimal places.) 0.2 + 0.1- Step 3: Enter the test statistic. (Round to 3 decimal places.) Save For Later Su Check 02021 McGraw-Hill Education. All Rights Reserved. Terms of Use
8 10 11 12 13 14 A company that manufactures batteries used in electric cars is reporting that their newest model of battery has a mean lifetime, u, of 25 years. To test the company's claim, a competitor has selected 42 of these batteries at random. The mean lifetime of the sample is 24.2 years. Suppose the population standard deviation of these lifetimes is known to be 4.2 years. Is there enough evidence to reject the claim that the mean lifetime of the newest model is 25 years? Perform a hypothesis test, using the 0.10 level of significance. (a) State the null hypothesis H and the alternative hypothesis H,. O<O OSO H: 0 (b) Perform a hypothesis test. The test statistic has a normal distribution (so the test is a "Z-test"). Here is some other information to help you with your test. • Zo 05 is the value that cuts off an area of 0.05 in the right tail. • The test statistic has a normal distribution and the value is given byz= Check Save For Later Submit Assignmem O 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy I Accessibil
Transcribed Image Text:8 10 11 12 13 14 A company that manufactures batteries used in electric cars is reporting that their newest model of battery has a mean lifetime, u, of 25 years. To test the company's claim, a competitor has selected 42 of these batteries at random. The mean lifetime of the sample is 24.2 years. Suppose the population standard deviation of these lifetimes is known to be 4.2 years. Is there enough evidence to reject the claim that the mean lifetime of the newest model is 25 years? Perform a hypothesis test, using the 0.10 level of significance. (a) State the null hypothesis H and the alternative hypothesis H,. O<O OSO H: 0 (b) Perform a hypothesis test. The test statistic has a normal distribution (so the test is a "Z-test"). Here is some other information to help you with your test. • Zo 05 is the value that cuts off an area of 0.05 in the right tail. • The test statistic has a normal distribution and the value is given byz= Check Save For Later Submit Assignmem O 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy I Accessibil
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