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Explain whether the width of a 95% confidence interval would increase, decrease, or remain the same as a result of the following changes in the design of a survey. Assume that sampling will be from the same population in all cases.
a. A planned sample size is increased from 500 to 1000.
b. A planned sample size is decreased from 1500 to 1000.
You have asked to research the high absenteeism rate in your company. One required analysis is to be by gender. Assume you have been asked to do the study via a survey.
What is the probability of getting the first questions correct and miss the fourth with five possible answers to each question?
One of the main measures of the quality of service provided by any organization is the speed with that responds to customer complaints. A large family-held department store selling furniture and flooring, including carpet, had undergone a chief ex..
according to a recent report by the government new home construction fell to an 18-month low in october 2010
At the present time, the warehouse is 40 feet deep. How many feet of depth should be added on the warehouse to minimize the annual inventory costs?
Prepare a bar graph that displays the number of patients by age of diagnosis. Prepare a pie chart that displays the number of patients by race. Prepare a table that displays the numbers of patients by sexual orientation.
is there a relationship between these two measurements for the size of the 30 major league baseball stadiums?a. before
Find the mean, median, mode, standard deviation, and variance. Analyze and explain why these statistical measures are important and how they apply to your data.
the average act score in minnesota in 1986 was 19.4. assuming a standard deviation of 2.0 find approximate the
what is the difference between the goodness-of-fit test for equal expected frequencies and unequal expected
the number of customers arriving at the checkout counter in a department store during a one hour period is a poisson
A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the margin of error?
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