Question

Harry’s Hamburgers claims that the residents of Harryville eat at the hamburger chain an average of exactly 18 times per year. You took a sample of 48 residents of Harryville and found that the sample mean was 17. The sample standard deviation was 4.5. You want to test to see if Harry’s claim can be disputed with a significance level of 0.05.

1. For each number in the problem, give the appropriate mathematical symbol associated with that number: a. 18 =
   ** the answer is not μ -- this had been marked wrong...

2. -----------------------------------------------------------------------------------------------------------------------------------------------------

3. A CEO is trying to decide whether or not to fire the HR director. The default decision is for the HR director to keep the job, but the CEO will fire the HR director if there is statistically significant evidence that less than 75% of the new employees at the company stay for more than a year. A sample of 300 new employees showed that 72% of the new employees in the sample stayed for more than a year.

   For each number in the problem, give the appropriate mathematical symbol associated with that number: a. 75%=.75= *** the answer is not P this was marked wrong

4. State your conclusion in statistical terms.

for the first problem-- its not just the mu. we dont know that the mu is.

for the second one its not just p. we dont know what p is

for the last problem-- its neither accept nor reject whag can we say instead when p value > alpha

Answer 1