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Problem: A particular manufacturing design requires a shaft with a diameter between 19.89 mm and 20.012 mm. the manufacturing process yields shafts with diameters normally distributed, with a mean of 20.005 mm and a standard deviation of 0.004 mm. complete parts (a) through (c).
a. For this process what is the proportion of shafts with a diameter between 19.89 mm and 20.00 mm?
Confidence interval for the mean life expectancy of a nonsmoker - confidence interval for the mean price of a gallon of heating oil on the west coast.
What is the minimum number of workers required and must include all model and solver formulas in excel.
If sales invoices are automatically calculated and posted by a company's computer system, can the auditor reduce substantive tests of transactions for the accuracy objective? Why?
A high of 10 was possible. A sample of five tests was selected from each group. The test grade results are found below. At the 0.01 level, how many treatments are involved?
the national center for education statistics reported that 47 of college students work to pay for tuition and living
a sample of 400 female consumers of a product had a mean age of 33 with a standard deviation of 5 and a sample of 500
let x be a discrete random variable with pmf fx and cdf fx. prove fx is a non-decreasing function that is if x1lt 2
Give an example of a problem (business, political, scientific) in which ANOVA analysis would be appropriate. (Hint: the dependent variable is categorical, such as male vs. female or comparing three different types of fertilizer.)
the heights of people of the same sex and similar ages follow a normal distribution reasonably closely. weights on the
x is a chi-square random variable with 10 degrees of freedom. what is the value of a such that px lt a .025? answer to
An experiment is designed to test the effectiveness of a specific type of gender selection process, using 15 couples trying to have baby girls.
At the .05 significance level, can we conclude that the guideline is still reasonable?
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