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What is the purpose of a survey? What are three examples of a survey and what potential purpose could each be used for?
How can one work to ensure the participants of a survey will have their responses kept private?
How can one work to ensure that information gained from a survey is unbiased?
Would planning and having ample time to conduct a survey be important? If so, why? If not, why not?
A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability the sample mean is
The sales manager had predicted, before the business started, that year 1's sales would be 410 air conditioners. Using exponential smoothing with a weight of alpha = 0.30, develop forecasts for years 2 through 6.
What is the null hypothesis? What is your decision if a = 0.01?
An analyst thinks that the economic conditions during the next year will either be Strong, Normal or Weak and she thinks that the Simpson Company's returns will have the following probability distribution.
The summation sign is usually represented by:
Generate a 95% confidence interval for the true mean total cholesterol levels in children.
Compute the correlation among the variables. Describe perfect correlation also negative correlation. Utilize the following data to answer questions related.
Forecast sales for the next day using a three-day weighted moving average where the weights are 3, 1, and 1 (the highest weight is for the most recent number).
As part of this trial, they want to find out whether there is a difference between effectiveness for women and for men. At = .05, what is the test value?
An independent researcher has decided to study variations in TV viewing habits among three American cities. She has managed to randomly sample households in Chicago, Atlanta, and Minneapolis and gather data on the daily "on" times for households o..
The number of customers who have requested a reservation at full fare for this flight in the past always has a normal distribution with mean 40 and standard deviation 10. Determine how many seats should be reserved for customers who pay full fare.
A game involving a pair of dice pays out $4 with probability 16/36, costs you $2 with probability 14/36, and costs you $6 with probability 6/36.
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