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Consider the following population of 10 numbers. 20 25 13 19 9 15 11 7 17 30
a) Find the population mean. Round to two decimal places.
b) Rich selected one sample of nine numbers from this population. The sample included the numbers 20, 25, 13, 9, 15, 11, 7, 17, and 30. Calculate sampling error for this sample. Round to decimal places.
state two research hypotheses that can be tested using a one-tailed t test and discuss why a one-tailed t test would be
An automotive repair shop has determined that the average service time on an automobile is 2 hours with a standard deviation of 32 minutes. A random sample of 64 services is selected. Assume the population consists of 400 services. Determine the st..
A 1-hour flight is .02. What is the probability that (a) both will fail? (b) Neither will fail? (c) One or the other will fail? Show all steps carefully.
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the population mean of monthly wages of all college graduates under age of 30. Interpret your answer in the context of the problem.
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we flip a fair coin 10 times. what is the conditional probability of getting 10 heads given that the number of heads is
fifty students are enrolled in an economics class. after the first examination a random sample of 5 papers was
Suppose that there are 63 boys assigned to the new drug group and 58 boys assigned to the placebo. Is there a statistically significant difference in the proportions of boys assigned to the treatments? Run the appropriate test at a 5% level of sig..
Sub-dividing Numerical Values
As an illustration, if contestant 1 obtains a smaller value than contestants 2 and 3 but contestant 4 has a smaller value than contestant 1 (X4 n) as a function of n.
following are the total scores of three subjects of seventy four year 8 students from a high school.10nbspnbsp 1 4 6 7
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