Business Weekly conducted a survey of recent graduates from the top MBA programs. On the basis of the survey, assume that 55% of the recent graduates annual salary exceeds $65000. Suppose you take a...

Extracted text: Business Weekly conducted a survey of recent graduates from the top MBA programs. On the basis of the survey, assume that 55% of the recent graduates annual salary exceeds $65000. Suppose you take a simple random sample of 64 recent graduates. Note: round all z scores to 2 decimal places and all other numbers to 4 decimal places. Find the probability that less than 45% of the 64 recent graduates have an annual salary exceeding $65000. Beyona representative sampling, what assumptions are needed to satisfy the requirements for this problem? X ~ normal and n > 30 X ~ binomial and at least 5 successes and failures X - binomial and both np and nq at least 5 X - normal or n > 30