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A survey found that women's heights are normally distributed with mean 63.6 in and standard devistion 2.5 in. a branch of the military requires women's heights to be between 58 in and 80 in.
What is the percentage of women who meet the height requirement?
For a sample of students in the college of business administration at mid-atlantic university, the mean grade point average is 3.10 with a standard deviation of 0.25.
If probability of drawing a face card is 0.625. Determine the probability of not drawing a face card.
In a poll of 1,004 adults, 93% indicated that restaurants and bars should refuse service to patrons who have had too much to drink. Construct the 90% confidence interval for the proportion of all adults who feel the identical way.
The probability is 90% that the sample percentage will be contained within what symmetrical limits of the population percentage?
Carry out the suitable hypothesis test, at alpha = .05, to find out whether there is a relationship between school/work and stress.
Between what two values does the P -value of this test fall?
Build a scatter plot, Find the value of the linear correlation coefficient r, and find the critical value of r using α=0.05. Determine whether there is sufficient evidence to support a claim of a linear correlation between the two variables.
They are thinking of introducing a new flavour, maple-marshmallow Frumpies, and want to know whether children will prefer the new flavour to the old one. Design a completely randomized experiment to investigate this question.
Suppose the manufacturers claim is right, determine the probability the mean of sample is 47,840 miles or less?
In order not to violate the requirements necessary to use the chi-square distribution, each expected frequency in a goodness of fit test must be:
The singer has the following variety of songs, in no particular order: 7 relationship songs, 6 songs about people, 4 reflective songs, and 4 songs about places.
According to a national survey of 1,500 Silverman Sachs customers, 1,050 of them were either satisfied or very satisfied with their financial advisor.
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