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1. R.C. Geary wrote some 70 years ago that "Normality is a myth. There never was, is, nor will there ever be a Normal distribution". What do you think he meant and what relevance does it have to your work?(Read the Week 2 Lecture 1 before answering)
2.How do you feel that the inferential statistical technique of Hypothesis Testing can be used by managers to make better business decisions? How does or can your organization use this statistics concept as it conducts business research and makes decisions?
what is the sampling distribution model of the percent passing developmental courses for your campus in Fall 2009 and provide the percentages between which we would expect to see 68% of the sampling distribution, 95% of the sampling distribution
Construct a 95% confidence interval estimate of their mean weight.
Kind of examination produced significant main effects on both mean mark and time taken to complete the examination.
The management of a regional bus line thought its cost of gas might be correlated with its passenger/mile ratio. Comment on the data and correlation matrix below.
You create a 95% confidence interval for your average score and it is (76.347, 79.133). Given this information, what is the best conclusion?
For a standard normal distribution, findout the percentage of data that are among 3 standard deviation below the mean also1 standard deviation above the mean.
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level.
Use normal disrtibution of fish lengths for which the mean is 8 inches and the standard deviation is 5 inches. Assume the variable x is normally distributed.
If employee is chosen at random, determine the probability that employee is female and salaried staff? Choose the best answer from the following.
Calculate a 3-period moving average for period 7. Compute the MAD of the forecast.
A video rental store has two video cameras available for customers to rent. Historically, demand for cameras has followed this distribution:
Determine the probability that the project will be completed in 90 days or less.
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