Find the indicated probability. 15) A tennis player makes a successful first ser

Question

Find the indicated probability. 15) A tennis player makes a successful first serve 46% of the time. If she serves 8 times, what is the probability that she gets exactly 3 first serves in? Assume that each serve is independent of the others. (3 Marks] 15) A) 0.0973 B0.00447 C)0.250 D) 0.147 Solve the problem. 16) A company manufactures batteries in batches of 25 and there is a 3% rate of defects. Find the mean number of defects per batch. 12 Marks] 16) A) 7.5 B) 0.8 C)24.3 D) 75 Find the area of the shaded region. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. 17) 4 Marks 1.88 17) A) 0.0602 B) 0.0301 0.9699D) 0.9398

Explanation / Answer

Ans 15

Find the indicated prob

it follows binomial distribution

Probability of success on a single trial = 0.46

Number of trials = 8

Number of successes (x) = 3

Binomial Probability: P(X = 3) = 0.250 (option C)

Ans 16

Mean = n*p = 25*0.03 = 0.75~0.8 (option B)

Ans 17

Option D - 0.9398

PS: We are directed to solve only first if multiple questions are posted i am doing att 3

please upvote

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