Business Weekly conducted a survey of recent graduates from the top MBA programs. On the basis of the survey, assume that 80% of the recent graduates annual salary exceeds $45000. Suppose you take a simple random sample of 66 recent graduates. Note: round all z scores to 2 decimal places and all other numbers to 4 decimal places. Find the probability that more than 90% of the 66 recent graduates have an annual salary exceeding $45000.  Beyond representative sampling, what assumptions are needed to satisfy the requirements for this problem? X~binomial and at least 5 successes and failures X~normal and n≥30n≥30 X~normal or n≥30n≥30 X~binomial and both npnp and nqnq at least 5

Referring to the example below If a compliance rate of 95% is expected how many of the 750 charts requested could fall below the standard and still be within the 95% goal An him department has 50,000 active records on file the record supervisor has established a maximum 15 minute time. For retrieval of a record during the past month 750 charts were requested of this number 688 where retrieved within a 15 minute. What percentage of the records fell below the established standard subtracting 688 from 750 indicates that 62 charts did not meet the required standard bus 62 out of 750 retrievals were not in compliance for an 8.27% non-compliance rate

According to a 2009 Reader's Digest article, people throw away about 14% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 135 grocery shoppers to investigate their behavior. What is the probability that the sample proportion does not exceed 0.19? Answer = (Enter your answer as a number accurate to 4 decimal places.)

The table summarizes results from 975 pedestrian deaths that were caused by automobile accidents. DriverIntoxicated? Pedestrian Intoxicated? Yes No Yes 45 74 No 285 571 If one of the pedestrian deaths is randomly selected, find the probability that the pedestrian was intoxicated or the driver was not intoxicated.Report the answer as a percent rounded to one decimal place accuracy.