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Find the minimum shape size n needed to estimate μ, find the given values of C, S, and E
c=0.98, s=9.7, e=1
assume that the pelimonary sample has 30 members
A sample of 40 ovservations is selected from one population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observers is selected from a second population.
What is the approximate probability that the total time spent on the calls will be greater than 98 minutes? Give your answer to four decimal places.
Airlines monitor the causes of flights arriving late. 75% of flights are late because of weather, 35% of flights are late because of ground operations. 10% of flights are late because of weather and ground operations.
Suppose that the number of cars, X, that pass through a car wash between 4:00pm and 5:00pm on any sunny Friday has the following probability distribution:
A) census bureau data show that the mean household income in the area served by a shopping mall is $62,500 per year. A market research firm questions shoppers at the mall to find out whether the mean household income of mall shoppers is higher..
Carry out t test and find out whether or not demand and unit price are related. Let a=.05. Carry out an F test and find out whether or not demand and unit price are related.
An elevator starts at the basement with 8 people (not including the elevator operator) and discharges them all by the time it reaches the top floor, number 6.
The following table contains t0 new sub- oups of thickness data. Plot this data on the control charts from (a) based on the new subgroup size. Is the process in statistical control?
If a particular shipment of thousands of components actually has a 6 percent rate of defects, what is the probability that this whole shipment will be accepted?
Construct a scatter plot and calculate the slope and intercept in this problem
A poll found that 329 out of 763 adults said they would travel to outer space in their lifetime, given the chance. Estimate the true proportion of adults who would like to travel to outer space with 92% confidence.
Which study has the higher probability of a Type II error, the 60-subject study or the 100 -subject study? Which study has higher power?
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