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Among U.S. with a population of more than 250,000 the mean one way commute time to work is 24.3 minutes. The longest one way travel time is in new yourk city where the mean time is 37.7 minutes assume
The standard deviation of 0.01 inches. What is the probability that a randomly selected pencil will be less than 0.285 inches?
Assuming this finding to be based on a simple random sample of 800 Stooge fans who have a favorite Stooge, construct and interpret the 95% confidence interval for the population proportion whose favorite Stooge is Moe.
Suppose the following data represent thickness between and within silicon wafers (in microns), with a target value of 14.5 microns.
Max likes to keep track of birthdays of people he meets. He has 170 birthdays listed on his birthday calendar. One cold January night, he comes up with.
A central university has a student population of 60,000. The university is interested in determining what proportion of them is in favour of a new grading system.
a consumer magazine wants to compare the lifetimes of ballpoint pens of three different types. the magazine takes a
Develop a forecast of enrollment next semester using exponential smoothing with a a= 0.2. Assume that an initial forecast for the first semester was 120 (so the forecast and the actual were the same.)
Evaluate the difference in the mean ratings and find the standard deviation of the difference in the ratings, what is the chance both children are boys?
Researchers testing a new medication find that 7% of users have side effects. To how many pa- tients would a doctor expect to prescribe the medication before finding the first one who has side effects?
Assume normality. Is there any evidence to suggest that the price of a ticket on this route differs if purchased 21 or 49 days in advance?
In how many ways can the countries be assigned so that all of the North American countries are assigned?
Criticize the following definitions in light of the eight rules for lexical definitions:- Wine is an alcoholic beverage made from grapes.
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