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A Wendy's franchise has been averaging about $5000 worth of business on a typical Saturday with a standard deviation of σ = $500. The manager is concerned that sales are slipping, after taking into account the average value of sales for four consecutive Saturdays being $4800.
If we wanted to shorten the interval of the estimation of the true mean of Saturday sales to a width of $600 in total, what should the size of our sample be to achieve it?
What is the sample space for this process and evaluate the variance of the intelligence scores
Using a 5% level of significance, can we say that, generally there is important difference between satisfaction levels of mid country residents and coastal residents?
As we can say there is 5.5 percent chance of seeing the current policy having an effect on smog in the results we observed from natural sampling variation.
Determine the probability the transmission will break down between 100,000 and 200,000 miles?
The average number of days absent per student per year at West Valley School is 17 days with a standard deviation of 4 days. How many standard deviations from the mean is 6 absent days?
Determine the distributions given below represent a probability distribution. Justify your answer.
Interpret coefficient on log (salesm). If salesm were to be increased by 20%, what would be estimated change in mktgp? Would this effect be substantive?
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
What is the probability that separates the bottom 25 percent from the rest of the distribution.
Let Y be the number of envelopes for which the machine fails to remove a check. Using the Central Limit Theorem to approximate P{Y≤10}.
Determine the mean and standard deviation of following probability distribution.
If they must form an ethics subcommittee of 4 members, how many different subcommittees are possible?
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