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Verifying whether a population proportion is a pre-determined value:
My mgr needs information. I need to determine if a new product is worth marketing. At least 85 percent of the public must express interest in the product and for those that do the average cost they are willing to pay must be at least $47.50.
I survey 50 potential consumers regarding their interest in the product, 34 express an interest in purchasing it. The maximum price each would be willing to pay is shown below.
How should I respond to the request for information? Should the product be marketed?
Maximum Prices
47
62
46
43
53
34
54
45
35
65
36
32
31
25
38
37
56
48
42
63
For which of given variables must a "two tail" t-test be applied?
If true explain and if false give an example. a. The significance level of a statistical test is equal to the probability that the null hypothesis is true. b. If the significance level of a test is decreased, the power of the test would be expected t..
What is the probability that: The amount requested is $80,000 or more?
Stanford Binet IQ scores have a mean of 100 and a standard deviation of 15. Albert Einstein reportedly had an IQ of 160. Convert Einstein's IQ score to a z score.
One of the most important uses of a correlation is its potential use in_________
What is your conclusion? Are the two variables independent?
Morality Study for a group of four men, the probability distribution for the number x who live through the next year is as given in the accompanying table.
In each of the following situations, the sampling frame does not match the population, resulting in undercoverage. Give examples of population members that might have been omitted:
Would you conclude that your data set is approximately normal? If so, what percentage of your data values lie:
If these answers were combined into single statistic, how could we explain sample space? Mention how many elements are in sample space?
At 0.05 level of significance, is there evidence of noteworthy difference in variation in sales among different aisle locations?
Find the probability of a Type II error if in fact the mean waiting time is actually 9.8 minutes.
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