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Credit card balances as normally distributed, with a mean of K2870 and a standard deviation of K900. What is the probability that a randomly selected credit card holder has a credit balance less than K2500
Phone numbers The dotplot below displays the last digit of 100 phone numbers chosen at random from a phone book. Describe the shape of the distribution.
A newspaper finds that the mean number of typographical errors per page is five. Find the probability that:
a college requires applicants to have an act score in the top 10 of all test scores. the act scores are normally
Find the expected value if the cost of entering this sweepstakes is the cost of a postage stamp. Is it worth entering the contest?
Refer to the box plot below to answer the questions. If a data point that was originally 13 is changed to 14, how would the box plot be affected?
If you are using exponential smoothing for forecasting an annual time series of revenues, what is your forecast for the next year if the smoothed value for this year is $32.4 million?
Steroids in high school A study by the National Athletic Trainers Association surveyed random samples of 1679 high school freshmen and 1366 high school seniors.
Tall Tale? A Study Suggests That Spring Babies Have More Stature" reports that spring babies were found to be taller, by 0.23 of an inch
The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours. What percentage of bulbs has lifetimes that lie within 1 standard deviation of the mean on either side?
a) What is the probability that the two flavours displayed are Guava and Grape?
use n9 and p0.8 to complete parts a through c belowa find the probabilities and construct a binomial probability
A study was conducted to determine the tension needed by various types of guitar strings in order to produce the proper frequency.- Conduct the appropriate test to check the hypothesis of no difference in population mean tensions.
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