Answer: If the null hypothesis is true, the probability of observing a sample mean of at least 5.15 minutes is .031
Step-by-step explanation:
You can complete this by solving:

Which should give you .274418 or 27.44%
Answer:
1/32
Step-by-step explanation:
You plug 7 for n and solve in calculator.
Answer:
3
Step-by-step explanation:
The principal, real, root of:
=1.73205081
All roots:
1.73205081
−1.73205081
3 is not a perfect square
Answer:
NO IT IS NOT
Step-by-step explanation:
LOOK IN THE CALUCULATOR