Explained the mistake and correct answer in photo.
Answer:
a) Level of significance
b) Standard normal


c)

d)
e) We fail to reject null hypothesis
Step-by-step explanation:
Let us say
The null hypothesis H_0 is p= 0.70 which means that Probability of arresting male of age ranging between 15 to 34 years is 0.7
Alternate hypothesis H_1 is p not equal to 0.7 which means that Probability of arresting male of age ranging between 15 to 34 years is not equal to 0.7
a) For 1% level of significance
b) Standard normal



c)

d)
e) We fail to reject null hypothesis
Hence, there is not enough data to prove that at 1% level of significance the probability of number of male arrested between age 15-34 is 0.70
The first working out is correct, z = 3
Take the area of the whole shape and then subtract the area of the white part, and the shaded part's area will then be left.
(8*24)-(0.5*24*8)=96
Answer D