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Of the customers that go shopping in the local Wears store, the average time spent in minutes was 45 for men and 120 for women. The amounts were normally distributed with a standard deviation of 10 and 12 for men and women, what is the probability that man will spend at most an hour?
A Geiger-Muller tube and a scaler record approximately 50 counts per second due to a radioactive source. What is the shortest counting time required so that the percentage error of the counts will not exceed 1%?
Construct a 90% confidence interval for the population proportion p . Does your result agree with your conclusion in part (a)?
A statistical analysis of 1,000 long-distance calls made from the headquarters of the Bricks and Clicks Computer Corporation indicates that the length of these calls is normally distributed with μ = 240 seconds and σ = 40 seconds.
A restaurant claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1 minute.
Using the following information, find the equation of the regression line, and predict the heart rate when 0.27 milligrams of the drug is used.
You decide to predict gasoline prices in different cities and towns in the U.S. for your term project. Your dependent variable is price of gasoline per gallon and your explanatory variables are per capita income
An entrepreneur is considering the purchase of a coin-operated laundry. The present owner claims that over the past 5 years, the average daily revenue was $675 with a standard deviation of $75.
Write introduction to STATISTICAL PROCESS CONTROL and Explain the use of SPC tools used at D2D
What is the correlation between student cumulative GPA and the numbers of hours spent on school work each week? Be sure to include the computations.
10 cartons are taken at random from an automatic filling machine.The mean net weight of the carton is11.8 kg and standard deviation of 0.15kg. Does the sample mean differ significantly from the intended weight of 12kgs?
how many chocolate chip cookies will he need to sample to estimate the mean to within 2, what is a 99% confidence interval for the average number of chips per cookie?
If 16 measurements are taken and the standard deviation is 2.1 mg/dl is there enough evidence to support the claim that her standard deviation is greatear than the target at a = 0.01?
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