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For a normal distribution identify the z-score location that would seperate the distribution into 2 sections so that there is
a) 10% in the tail on the right hand side
b) 20% in the body on the right hand side
c) 20% in the tail on the left hand side
d) 30% in the tail on the left hand side
The sample has a mean weight of 15.3 pounds and a standard deviation of 1.9 pounds. Create a 95% confidence interval estimate for the true mean weight of all packages received by the parcel service.
Conduct a global test of hypothesis to determine whether any of the regression coefficients are not zero. Use the .05 significance level
Is the z value positive or negative? Explain why it should be positive or negative.
Sample without replacement when testing batches of products. When sampling without replacement, should you use the multiplication rule for independent or dependent events.
calculate the Pearson product-moment correlation coefficient and test for significance at the .01 level and calculate a t-test and test for significance at the .05 level, 2-tailed level of significance.
What is the basic principle that can be used to simplify a polynomial? What is the relevance of the order of operations in simplifying a polynomial?
A financial analyst is interested in estimating the average amount of a foreign loan by U.S. banks. Construct the Stratum weights for proportional allocation
Survey of 16 tax returns reports families with incomes between $75,000 and 100,000 have on average $8,562 in Standard Deductions with the standard deviation of $1,800.
What are the four assumptions for the chi-square tests? What are the hypothesis when conducting the chi-square tests for goodness-of-fit?
Assume that you are conducting a survey of customer satisfaction regarding their cellular phone.
A drama fan has taped 9 episodes (on nine different videotapes)of a drama. however, he only has time to watch four episodes. suppose he selects four tapes at random. How many different ordered arrangements of episodes are possible?
A 95% confidence interval for µ is found to be 652 ± 21.56 = ($630.44, $673.56). Determine which of the following statements is true.
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