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A survery found that womens heights are normally distributed with mean of 62.1 and standard deviation of 2.3 in. The survery also found that men's heights are normally distributed with a mean of 68.5 and standard deviation of 2.9.
Most of the live characters at an amusement park have height requirements with a minimum of 4ft 9 in and maximum of 6ft 4in.
A. Find the percentage of women meeting the height requirement.
B. Find the pecentage of men meeting the height requirement
C. If the height requirments are changed to exclude only the tallest 5% of men and the shortest 5% of women, what are the new height requirements_______in and _______in
Verify the computer"s calculations by checking the interval given for the first sample against your result in (b). Use the x reported by the software. (d) How many of the 25 confidence intervals contain the true mean = 460?
Determine equation in point-intercept form for line that goes through points (8,-1) and (4,3).
paired samples t-test for the given data.a local voluntary organization affiliated to the citizens advice bureau offers
a teacher is interested in comparing the effects of three different types of rehearsal methods rote rehearsal imagery
Can Mr. Rutter conclude that the mean weight of the bags is less than 50 pounds? Use the 0.1 significance level. In a brief report, tell why Mr. Rutter can use the z distribution as the test statistic.
Media Matrix and Jupiter Communications gathered data on the time adults and the time teens spend online during a month (USA Today, September 14, 2000).
A 95% confidence interval for the average difference between the two reaction times (traditional - LED) was (-171.37, 174.44). Which of the following is the appropriate conclusion?
question two types of vehicle use the university central bus station uni-link buses and national express coaches.a on
Rrequired service under the warranty. consider a new dealer. what is the probablity that the first claim under this warranty is the tenth car sold?
the length of time that a machine operates without failure is denoted by x and the length of time to repair a failure
The City Transit Authority plans to hire 8 new bus drivers. From the group of 100 qualified applicants, of whom 55 are men and 45 are women, 8 names are to be selected by lot. Suppose that Mary and John Lewis are among the 100 qualified applicants..
A nurse at a local hospital is estimating the weight of infants. how large a sample must she select if she desires to be 95% confident that the true mean is within 3 ounces of the sample mean?
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