Professional tennis player Serena Williams has a career win record of 81 If we took a simple random sample of 55 of her matches

Question

Professional tennis player Serena Williams has a career win record of 81 If we took a simple random sample of 55 of her matches what is the probability that at least 45 would be wins USE SALT a What is the mean of the sampling distribution of the sample proportion 0 81 b What is the standard deviation of the sampling distribution of the sample proportion Round your answer to four decimal places 0 0529 c The shape of the sampling distribution of the sample proportion is approximately normal Which of the following choices justifies that statement OA random sample was taken We have sampled less than 10 of the population The sample size is greater than 30 np 10 and n 1 p 10 d If we took a simple random sample of 55 of Williams s matches what is the probability that at least 45 would be wins Use a table or technology Round your answer to four decimal places X

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