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A regional survey of 560 companies asked the vice president of operations how satisfied he or she was with the software support received from the computer staff of the company. Suppose 33% of the 560 vice presidents said they were satisfied. Construct a 99% confidence interval for the proportion of the population of vice presidents who would have said they were satisfied with the software support if a census had been taken.
a sample survey at a super market showed that 204 of 300 shoppers regularly use coupons. use the large- sample
breathing is cyclic and a full respiratory cycle from the beginning of inhalation to the end of exhalation takes about
Determine the upper and lower control limits for ?- (This Symbol Is Supposed to be an x not an a) and R-charts for the width of a chair seat when sample grand mean
Do these data provide sufficient evidence to indicate that the mean for the population is less than 8 hours? assume a normally distributed population.
While not busy covering local football games and wedding receptions, the reporter has designed and taken simple random samples of regular unleaded gas prices at 35 stations in Minneapolis and 35 in St. Paul.
If a manufacturer charges x dollars each for soccer balls, then he can sell 3000 - 150x soccer balls per week. Find a polynomial that represents the revenue for one week.
Withdrawals of $400 for 3 years. Find the balance of her account just after the last withdrawal (on february 1,2001)if the monthly interest rate is 6%.
The number of newspapers sold daily at a kiosk is normally distributed with a mean of 300 and a standard deviation of 30. Calculate the probability that less than 250 newspapers are sold on a particular day.
Find out the expected number of correct responses under these circumstances if one in fact selects the responses at random. What is the standard deviation?
What are the theoretical considerations of hypothesis testing and why are these considerations important when conducting research studies?
To sketch the 3-sigma X-bar chart and R-chart parameters. A candy bar manufacturer desires to set up a variables control chart for the net weight of its candy bars.
the mean resting pulse rate for a large group of varsity athletes was 72 with a standard deviation of 9.46. what
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