Question

it currently takes users a mean of 44 minutes to install the most popular computer program made by rodetech, a software design company. after changes have been made to the program, the company executives want to know if the new mean is now different from 44 minutes so that they can change their advertising accordingly. a simple random sample of 51 new customers are asked to time how long it takes for them to install the software. the sample mean is 47.8 minutes with a standard deviation of 10.2 minutes. perform a hypothesis test at the 0.10 level of significance to see if the mean installation time has changed. step 1 of 3: state the null and alternative hypotheses for the test. fill in the blank below. $h_0:mu = 44$ $h_a:mu$ ______ 44 answer < ≠

Explanation:

Step1: Identify the purpose of the test

The company wants to know if the new mean is different from 44 minutes. A two - tailed test is appropriate.

Step2: Determine the alternative hypothesis

In a two - tailed hypothesis test for the population mean $\mu$, when the null hypothesis is $H_0:\mu = 44$, the alternative hypothesis is $H_a:\mu
eq44$.

Answer:

$
eq$