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Problem Statement: The Appliance Center sells a variety of electronics equipments and home appliances. For last four years the following quarterly sales (in $ millions) were recorded.
Create Frequency Distribution of Sample Mean. Compute and Identifies Sampling Distribution of Sample Mean.
Operators are to answer telephone calls from customers in an average time of 0.1 minute or less, and either respond to or refer to the proper department within 0.5 minute.
a) Do a test to see if workers attitudes on this matter have changed using a 90% alpha. b) Explain to management what your findings are and what this suggests about future decisions vs work options.
Determine the point estimate in this study? Compute the standard error in this example?
Of the adults in Jefferson County, 10% have had CPR training
If we repeated this procedure many, many times, only 5 percent of the 95 percent confidence intervals would fail to include the mean Math SAT score of the population of all students at this college.
The Manager of a seafood restaurant was asked to establish a pricing policy on lobster dinners. Experimenting with prices produced the following data:
Determine future value of annuity due which has $750 deposited at the starting of each month for 15 years at 5.9% compounded monthly.
Calculate the sample statistic and standard error you will use to create the test statistic.
Construct a time series plot. What type of pattern exists in the data? Compute the exponential smoothing forecasts for a = .2.
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
How much time should the employer allow employees to finish the job? (Round up to the nearest minute).
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