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As part of a dietary-instruction program, ten 25-34-year-old males adopted a vegetarian diet for 1 month. While on the diet, the average daily intake of linoleic acid was 13 g with standard deviation = 4 g. If the average daily intake among 25-34-year-old males in the general population is 15 g, then, using a significance level of .05, test the hypothesis that the intake of linoleic acid in this group is lower than that of the general population. Also, compute a p-value for the hypothesis test.
For a population with a mean of (u)=50 and a standard deviation of (o)=10, how much error on average would you expect between the sample mean (M) and the population mean for the following samples
Determine regression equation. Use assets as independent variables. For fund with $400.0 million in sales, determineut five-year rate of return (in percent).
Create a scatter plot for the data. Determine the correlation coefficient for the data.
What sample size should be chosen so that there is 0.95 probability of estimating the mean monthly income in $150 or less?
The trial failed to show significance. How many subjects would be required to detect the difference in proportions observed in the trial with 80% power?
Out of 1000 people surveyed, 600 belonged to urban areas and rest to rural areas. Among 500 who visited other states , 400 belonged to urban areas. Test 5 % level of significance whether area and visiting other state are dependent.
If 36 women are selected at random, find the mean, and standard deviation, of the population of sample means. Suppose that the sampling is done without replacement and use a finite population correction factor.
a) Explain why it would be hard to take a Simple Random Sample? b) Describe how to take a cluster sample of chocolate chip cookies.
Maria Gomez, a research analyst in the state department of health, has undertaken a study of the possible consequences of overbuilding hospital facilities.
What are the null and alternative hypotheses in this situation?
Chi square compares actual data with expected data. What would the expected data be? For example, if I know the percentage of brown M&Ms in a bag is 40% set by the company
Calculate mean and SS for sample of difference scores.
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