a population has a mean of 53 and a standard deviation of 21. a sample of 49 observations will be taken. the probability that the sample mean will be greater than 57.95 is

Convert 2000 swiss francs to dutch guilders

Find the distance of the blue line between the two labeled points. round to the nearest hundredth. a) 7.07 b) 7.21 c) 10 d) 5.12

At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?