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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.
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.
The average number of putts per hole for each player and their average driving distance is used to predict their total winnings using the multiple regression model where the deviations εI are assumed to be independent and Normally distributed with..
What is Peter's median grade point at graduation? What is the shape of the grade point distribution?
In order not to violate the requirements necessary to use the chi-square distribution, each expected frequency in a goodness of fit test must be:
If you have a statistical package that computes binomial probabilities, find the probability that at least five funds outperform the market in all 10 years.
Explain the effect outliers can have on the analysis of the center of this data set. Based on the box-plot and histogram you created for problem 1, do there appear to be any outliers?
If the loss of weight of customers at the end of their first month is normally distributed with a mean of 6.7lbs and a standard deviation of 0.81lbs
Probability distribution described by the following density curve and The expected value of the sum of the weights of the two oranges, in pounds
A coin is flipped e times and heads (h) or tails (t) are recorded:
LINEAR PROGRAMMING MODELS
Let Y be the number of envelopes for which the machine fails to remove a check. Using the Central Limit Theorem to approximate P{Y≤10}.
Use this information to make a 95% confidence interval to evaluate true average number of copies made each day at this company.
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