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The administrator of a nursing home would like to do a time-and-motion study of staff time spent per day performing nonemergency tasks. Prior to the introduction of some efficiency measures, the average person-hours per day spent on these tasks was µ = 16. The administrator wants to test whether the efficiency measures have reduced the value of m. How many days must be sampled to test the proposed hypothesis if she wants a test having a =.05 and the probability of a Type II error of at most .10 when the actual value of m is 12 hours or less (at least a 25% decrease from prior to the efficiency measures being implemented)? Assume σ = 7.64.
Prepare a new performance report for September using the flexible budget approach. (Note: Even though some of these costs might be classified as direct costs rather than as overhead, the flexible budget approach can still be used to prepare a flex..
as an occupational health epidemiologist you are required to measure the effect of stress on the workers in your
Post by Day 3 your one-sample ttest scenario. What would need to change in the scenario to result in the need for a two-sample ttest? Explain whether the two-sample scenario would be categorized as having independent samples or related samples and..
Create an accurate scatter plot of the data. This can be done by hand or using a program like Excel. Use Height as the x variable and Arm Span as the y variable. Does this graph show a linear relationship between x and y?
At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p-value.
A Container has 6 blue marbles, 3 red marbles, and 6 white marbles. If 3 marbles are drawn with replacement, what is the probability that all three will be blue?
each year an insurance company reviews its claim experience in order to set future rates. regarding their damage-only
Select the variable team salary and find the mean, median, and the standard deviation
How many hours of TV do the 1% of women who watch the most TV per week watch? Find the comparable value for the men.
If I know the T-score for those who made an A on a test is 60, the z-score for those that made a B is .5, the number of students total is 200,
Scores on a scholastic aptitude test are normally distributed with standard deviation σ=100 points. A group of 25 inner city high school students takes the test; their mean scores is x-bar = 440 points.
Because of a recent incident in which a number of people became ill after eating undercooked hamburger meat, intensive interest has centered around the cooking time for hamburger patties.
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