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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.
Assume duration of human pregnancies follow mound-shaped distribution with mean of 266 days and the standard deviation of 16 days.
If the mean number of serious accidents per year in a large factory (where the number of employees remains constant) is five, find the probability that in the current year there will be:
Test whether the mean weight is less than 10 pounds. Use P-value approach.
The histograms of some sampling distributions are symmetrical. T-F What would make a histogram symmetrical, and give an example of a symmetrical distribution? A random sample of size 36 is to be selected from a population that has a mean μ = 50 an..
For a discrete probability function that is given as: a. What is the expected value E(Y)? b. What is the standard deviation (σ) of the random variable Y?
Does the variability in output appear to differ at the two experience levels? Test the hypotheses at the .05 significance level.
See if there is a difference in their means and variances.
Compute the coefficient of determination, r 2 , and interpret its meaning.
Determine the probably of selecting a female or an accounting major? Which rule of addition did you apply?
The probability is 90% that the sample percentage will be contained within what symmetrical limits of the population percentage?
Compute the Kappa statistic and its standard error regarding reproducibility of the diagnosis of dyspnea in the clinic.
A distributor of pre-washed shredded lettuce is opening a new plant and considering whether to use mechanized process or manual process to prepare the product.
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