Answer:
Null hypothesis : 
Alternate hypothesis : 
Step-by-step explanation:
To Find : State the hypotheses to be tested.
Solution
Mean = 72
Standard deviation = 20
N = 30
Claim : Shorney Construction Company bids on projects assuming that the mean idle time per worker is 72 or fewer minutes per day.
So, Null hypothesis : 
Alternate hypothesis : 
700/32 = 21.875
He'd have to sell approximately 22 shares to have enough to pay for his vacation.
Answer:
A, C, D are all greater than 1/5
Step-by-step explanation: