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Q1) Wind damage repairs in particular place averaged $10,900 for 70 homes. Population standard deviation was known to be= $2,300.
a) Determine point estimate of population mean?
b) By using 90% confidence, determine the margin of error?
c: using 99% confidence, what is the margin of error?
Q2) In survey of 750 senior business executives by Business Week Magazine, 55% pointed out that they felt that even if merit and abilities are equal, people with MBAs frequently got promoted faster than people without degree. Create a 92% confidence interval estimate for population proportion. 92% CI ________to________.
Q3) With population standard deviation 6,a 90% confidence interval for population mean was 103 to 107. Find out sample size.
Describe what you find then produce an ANOVA for the problem.
When combining probabilities, to find the probability of one event AND another event, the separate probabilities should be
Collapse the response categories in the following tables so that it meets the assumptions of the chi-square test; than perform the test.
Pattern that most accurately represents mean, median and mode is?
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
Describe the sampling distribution model of this mean.
She is interested in testing the null hypothesis that the mean SAT score is the same for each type of schooling using the one-way ANOVA. Some summary statistics for the three groups are given below, followed by the one-way ANOVA table.
A coin is flipped e times and heads (h) or tails (t) are recorded:
Can we conclude that mean time for game is less than 3.50 hours? Use.05 significance level.
A simple random sample of 1000 Americans found that 61% were satisfied with the service provided by the dealer from which they bought their car.
Compute the probability of exactly 0,1,2,3,4, and 5 arrivals per day.
Arbitrarily choose someone from sample. Determine the probability that they are Jewish and Democrat?
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