Question

Vince Showers, Managing Director for Sleaz Entertainment, claims that the average age of their customers is at least 23. If this is not the case, Showers will face charges of violating local ordinances regarding public decency. One hundred customers averaged 19.7 years with s-10.2. Set alpha at 1 percent. a. State and test the hypotheses. Must Showers appear in court?

Answer 1

Hypothesis:

given ,

n =100

s = 10.2

alpha =1% =0.01

Test Statistics :

T = - 3.235

Df = n-1 =100-1 = 99

P value = 0.0008             ( Excel command =T.DIST(-3.235,99,TRUE))

Pvalue < 0.01 we reject H0.

There is not enough evidence to support the claim that the average age of their customers is at least 23 .

So he must apperas in the court.