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Jay can remember only the first 4 digits of his friends phone number. He also knows that the number has 7 digits and the last digit is not a zero. if jay were to dial all of the possible numbers and it takes him 21 seconds to try each one, how long will it take him (in total) to try each possibility?
q1. an investigator hypothesizes that cholesterol level in children might be affected by educating their
the data set represents the income levels of the members of a country club. find the probability that a randomly
If the manufacturer's claim is true, what is the probability that the claim will be rejected?
twenty-seven items are randomly selected from a population of 295 items. the sample mean is 35 and the sample standard
Create the indicated confidence interval for population mean µ using a t- distribution.
in a survey of 2395 adults 1916 reported that e-mails are easy to misinterpret but only 1269 reported that telephone
a persons level of blood glucose and diabetes are closely related. let x be a random variable measured in milligrams of
C-Spec has determined that the machine has a sample mean of 4.001 inches with a standard deviation of .002 inch. Calculate the (capability index) for this machine.
please give one example to explain the difference between an outlier and a data point with high leverage value. you can
When 40 people used the Weight Watchers diet for one year, their weight losses had a standard deviation of 4.9 lb (based on data from "Comparision of the Atkins, Ornish, Weight Watchers, abd Zone Diets for Weight Loss and Heart Disease Reduction, ..
The mean number of passengers per cruise is 1,820 and the standard deviation is 120.
suppose the prelliminary results were as follows group 1 n=310,p=32 and group 2 n=309,p=20 construct a 95% confidence interval for the difference in proportions of patients with new hair growth for the two groups using the given data.
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