Essay
A carpet company advertises that it will deliver your carpet within 15 days of purchase. A sample of 49 past customers is taken. The average delivery time in the sample was 16.2 days. Assume the population standard deviation is known to be 5.6 days.
a.State the null and alternative hypotheses.
b.Using a critical value, test the null hypothesis at the 5% level of significance.
c.Using a p-value, test the hypothesis at the 5% level of significance.
d.What type of error may have been committed for this hypothesis test?
Correct Answer:
Verified
a.H0: 
15
Ha: > ...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Correct Answer:
Verified
15Ha:
> ...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Q5: Exhibit 9-6<br>A random sample of 100 people
Q7: A sample of 16 cookies is taken
Q8: In hypothesis testing if the null hypothesis
Q11: In hypothesis testing, the hypothesis tentatively assumed
Q14: The manager of an automobile dealership
Q20: Read the t statistic from the table
Q30: From a population of cans of coffee
Q44: If a hypothesis is rejected at a
Q48: Read the t statistic from the table
Q55: In hypothesis testing, the critical value is<br>A)