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Assume that the following four examines were tested as part of a large group that had a normally curved distribution.
There were 37 students in the class.
Heather: Z = 1.05 Becky: Z = 1.10 Jerry: Z = 2.75 Sheldon: Z = .35
1. Approximately how many students in the group would score lower than Heather?
2. Approximately how many students in the group would have scored higher than Sheldon?
3. Approximately how many students in the group would have scored between Heather and Becky?
4. Which of these students probably occurred most frequently in the entire group's distribution?
Assume that the distribution of heights of adults American normally distributed, with mean 69 inches and standard deviation 2.8 inches.
Assume the data for the three groups are independent and the data are approximately Normal. The P-value is less than 0.01. The correct conclusion is that
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Probability that the entire batch will be rejected?
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10.
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Assume a one-tailed t -test is being applied to determine if population mean is less than $212. Level of significance chosen is 0.01 and 26 accounts are sampled. Determine the critical value?
Why is cumulative relative frequency distribution so much more informative that just relative frequency distribution? Use examples to explain these differences.
Find out optimal decision
I have fit a line to data representing cholesterol readings for 28 individuals starting a cholesterol reducing drug. The computer provides the following output, The degrees of freedom for the t test for the slope are
For thefts involving more than $1,000, there is an inverse relationship between the value of the goods stolen and the length of the prison sentence given to the thief.
The Bunte Auto Repair Shop received a shipment of four carburetors. One is known to be defective. If two are selected at random and tested.
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