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1) if 2% of the bolts manufactured by a company are defective, what is the probability that in a sample of 200 bolts
a. 5 will be defectiveb. 3 will be defectivec. average number of defective bolts
Two types of flares are tested for their burning times (in minutes) and sample results are given below.
The Wilcoxon rank sum of the ranks for group and The value of the Wilcoxon signed rank statistic
The 46 computer mice inspectors at a particular factory can only inspect 45 mice per hour. Does the company have reason to believe that these inspectors are slower than average at α = 0.10?
The one time fling. Have you ever bought the article of clothing (dress, sports jacket, etc.) worn item once to a party, and then returned purchase?
Compute the standard error of estimate, and interpret its meaning.
a) Test whether there is a difference between attitudes in the 2 cities. Use a 95% alpha. b) What does your result say about attitude consistency across cities?
Auditor wants to be within 7% of true proportion when using 95% confidence level. How many files should auditor sample?
Select either the Least Squares Method, the Moving Average Method, or the Weighted Moving Average and provide step-by-step instructions you would employ to plot the associated trend line.
Sampling distributions. Given a normal distribution with μ = 50 and standard deviation σ = 9, if a sample of n = 100 is selected.
To test the hypothesis that students who finish an exam first get better grades, a professor kept track of the order in which paper were handed in.
Describe a business-related situation in which you would expect there to be a strong relationship (correlation) between an independent and dependent variable.
A study on body types gave the following results: 45% were short; 25% were short and overweight; and 24% were tall and not overweight.
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