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The tensile strength of a mental part is normally distributed with mean 40lb and standard deviation 5lb. if 50,000 parts are produced, how many would you expect to fail to meet a minimum specification limit of 35lb tensile strength? How many would have a tensile strength in excess of 48lb?
If you randomly assign participants to groups, can you suppose the groups are equivalent at the beginning of the study?
A financial institution transfers a large data faile every evening from offices around the world to its San Antonio headquarters. Once the file is received, it must be cleaned and partitioned before being stored in the company's data warehouse.
The incubation time for Rhode Island Red chicks is normally distributed with a mean of 21 days and standard deviation of approximately 1 day.
What is the appropriate procedure to test for a significant difference in means between the two groups? Implement the procedure in problem using the critical value method
Can we conclude from this that most workers there earn between $25 and $35 per hour? Is this the right interpretation for the margin of error?
At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p-value.
Raccoons are identified by gender and then weighed from three different neighborhoods. Using a 0.05 significance level what can you conclude from the following Two-Way ANOVA results?
Advertising coefficient is 200 and t stat is 1.75. Which of the following statements is an accurate interpretation of the situation when using an alpha of .10
Make a point estimate and a 95% confidence interval estimate.
Micron Electronics makes both desktop and laptop personal computers that they sell directly to customers by phone or over the Internet.
Which of the following is a major difference between the binomial and the hypergeometric distributions?
Construct a 99% confident interval for the standard deviation of the amount of vitamin B6 per pill.
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