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An average computer mouse inspector can inspect 50 mice per hour. the 48 computer mice inspectors at a particular factory can only inspect 46 mice per hour with a standard deviation of 10. At alpha=0.02 company have reason to believe that these inspectors are slower than average?
If a vending machine will only accept coins weighing between 5.48g and 5.82g, what percentage of legal quarters will be rejected?
If you know you need a sample size of 1,063 out of 300,000 to get a 95% confidence level and a 3% confidence interval what steps would you take to get a random sample?
Define or give an example of a hypothetical construct. Explain why operational definitions are needed to define and to measure constructs.
(A) At the 0.05 level of significance, use the six step critical value approach to hypothesis testing to try and prove that the 2004 proportion has increased. (B) Use the 5 step p-value approach. Interpret the meaning of the p value.
Provide a descriptive statistic (to 1 decimal) that could be used to estimate the number of women out of 1000 in this population who have tissue abnormalities.
If a filled container of juice is selected at random, what is the probability that it is a nonconforming container? If a filled container of juice is selected at random, what is the probability that it was filled on machine II?
The following data resulted from a taste test of two different chocolate bars. The first number is a rating of the taste, which could range from 0 to 5, with a 5 indicating the person liked the taste which could range from 0 to 5
As reported by Runner's World magazine, the times of the finishers in the New York City 10-km run are normally distributed with a mean of 61 minutes and a standard deviation of 9 minutes. Let x be the finishing time for a finisher in the New York ..
A trans-oceanic airline conducted a study to determine whether the average weight of baggage checked by a passenger differs significantly from 45 pounds.
Find a 90% confidence interval for the population mean salaries of such personnel. Round your answer to the nearest dollar and don;t forget to use the $ sign.
The mean statistic test scores is 64 and the standard deviation is 6.0. For the biology test scores, the mean is 25 and the standard deviation is
The random variable "x" is the number of times he wins in 20 attempts at the game. Find the mean and std dev. for this experiment.
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