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Chapter 9: Q.9 (page 537)

A random survey of 75 death row inmates revealed that the mean length of time on death row is 17.4 years with a standard deviation of 6.3 years. If you were conducting a hypothesis test to determine if the population mean time on death row could likely be 15 years, what would the null and alternative hypotheses be?

a. H0: __________

b. Ha: __________

Short Answer

Expert verified

The null and alternative hypotheses are H0:μ=15years and

Ha:μ≠15 years respectively.

Step by step solution

01

introduction

The null hypothesis of a test generally predicts no impact or no connection between factors, while the alternative hypothesis expresses your exploration forecast of an impact or relationship.

02

explanation

Given,

number of death row inmatesn=75

x-= mean length of time on death row is17.4years

standard deviation =6.3years

Hypothesized mean μ=15years

we get,

Null hypothesisH0:μ=15death row mean time =15years and the alternative hypothesis Ha:μ≠15death row mean time is not15years.

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