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In addition to knowing how many customers will enter your restaurant you will also like to start developing a 99% Ci for daily revenue. Your sample size is 50 you sample mean is $4500 and you sample standard deviation is $150. You do not have enough information to find a population standard deviation
What is your margin of error
What is the CI based on your margin of error
Suppose you wanted to develop a 95% Ci repeat parts a and b for a 95% Ci.
Can we conclude that the mean age of the population from which the sample may be presumed to have been drawn is less than 60 years? Let α = .05
1) There are 500 employees in a firm, 45% are female. A sample of 60 employees is selected randomly. a) Determine the standard error of the proportion.
The management of White Industries is considering a new method of assembling its golf cart. The present method requires 42.3 minutes, on the average, to assemble a cart.
the 70-year long-term record for weather shows that for new york state the annual precipitation has a mean of 39.81
Data for a sample of 55 members of the Baseball Hall of Fame in Cooperstown, New York, are shown here. Each observation indicates the primary position played by the Hall of Famers
In a regression analysis, three independent variables are used in the equation based on a sample of forty observations. What are the degrees of freedom associated with the F-statistic?
suppose that 88 of college men and 82 of college women were employed last summer. a sample survey interviews
What is the significance of the picture at the top of the t-table? What is the difference between a sample parameter (X-bar and s) and a proportion parameter (n)?
Each of four tasters picks one coffee anyway (not knowing which is which, because the coffee is in identical cups). What is the probability that a) All four tasters choose Tasty Bean?
Critically discuss some examples of descriptive statistics? Why are they used in research? What is a confidence interval?
In the past, only 5% of these diskettes have had bad sectors. If the company wishes to set 99.7% control limits based on samples of size 500, what would these limits be?
Class where the mean is 85 and the standard deviation is 4.59, who did better relative to their class? Note both did better than the class mean. How do you answer this question?
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