1)Option B is the correct option.
231
2)Option A is the correct option.
6336
3)Option B is the correct option.
307 (not sure)
I think the probability is 13.89%
Answer:
Step-by-step explanation:
From the information given:


The type 1 error is rejecting
when
The meaning of Type 1 error is rejecting the claim that the mean running time is 9.7 hours when actually the mean running time is greater than 9. 7 hour.
67+1=68. 54+14=68 their are more than that just subtract a number from it and use it
And you will find the answer