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1.) If you buy a box of Wisk, the probability of getting a scoop is 97%. If you buy 9 boxes over the next several months, what is the probability of missing two scoops?
2.) The average length of a cellular phone call in the US is 3.4 minutes. If the standard deviation of those calls is .07 minutes (population standard deviation), what is a 99% confidence interval? We calculated the mean from 86 cellular calls.
3.) A customer service agent gets a call every 6 minutes. What is the probability that the agent will get less than 8 calls during the third hour she works?
The mean number of cargo ships that arrive at a port is 3 per day. The port has staff and facilities to handle up to 6 ships in a day. Using the Poisson distribution, find the probability that, on a given day,
If they must form an ethics subcommittee of 4 members, how many different subcommittees are possible?
A machine is set to pump cleanser into a process at the rate of 8 gallons per minute. Upon inspection, it is learned that the machine actually pumps cleanser at a rate described by the uniform distribution over the interval 7.5 to 10.5 gallons per..
Consider a hypothesis test that uses a 0.05 significance level to test the claim that the mean body tem of the population is less than 98.6
Assuming that the standard deviation is known to be 121.8Ib use 0.05 significance level to test the claim that the population mean of all such bear weights is greater than 150 Ib
If the sample size is 36 with three treatment means (response variables) and you are performing an ANOVA, then the degrees of freedom for the error term will be:
According to the retail electronics chain, adults in 40 to 50 year old age group, the mean amount spent per year on electronics is $1998.
A recent survey reported in Business Week dealt with the salaries of CEOs at large corporations and whether company shareholders made money or lost money.
Use an alpha level of .01 and test the hypothesis that the two methods are producing the same mean.
What information is provided by the numerical value of the Pearson correlation? For the following scores, compute the Pearson correlation:
Determine the dimensions of resulting exchanger?
A University Web server has five main components each with the same reliability. All five components must work for the server to function as intended.
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