1. A supplier of TI-83 calculators claims that the average life of their calculators is 8 years. A sample of 16 calculators reveals a sample mean life of 7.8 years. The sample standard deviation is 0.2 years. Does the data suggest the average life of TI-83 calculators is not 8 years at the 0.05 level of significance? Assume that calculator lifetimes are normally distributed.(a) State the null and alternative hypotheses.(b) Give the test statistic and p-value.(c) Use the test statistic and p-value to make a decision about the null hypothesis (reject or fail to reject). Interpret the decision in the context of the problem.

Solution: Given information: n =16 sample size of calculators x=7.8 years Sample meanμ=8 years…

A supplier of TI-83 calculators claims that the average life of their calculators is 8 years. A sample of 16 calculators reveals a sample mean life of 7.8 years. The sample standard deviation is 0.2 years. Does the data suggest the average life of TI-83 calculators is not 8 years at the .05 level of significance? Assume that calculator lifetimes are normally distributed. (a) State the null and alternative hypotheses. (b) Give the test statistic and p-value.

A supplier of TI-83 calculators claims that the average life of their calculators is 8 years. A sample of 16 calculators reveals a sample mean life of 7.8 years. The sample standard deviation is 0.2 years. Does the data suggest the average life of TI-83 calculators is not 8 years at the .05 level of significance? Assume that calculator lifetimes are normally distributed. (a) State the null and alternative hypotheses. (b) Give the test statistic and p-value.

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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