Answer:
The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.
Step-by-step explanation:
A confidence interval has the following format.

In which
is the mean of the sample and M is the margin of error.
In this problem, we have that:



The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.
Answer:
570
Step-by-step explanation:
Answer:
1/7
Step-by-step explanation:
Answer:
90
Step-by-step explanation:
if you get the numbers 10 and 9 you multiply them to get 90