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Scores of an iq test have a bell shaped distribution with a mean of 100 and a standard deviation of 16. Use the empirical rule to determine the following.
What percentage of people has an IQ score between 84 and 116? What percentage of people has an IQ less than 68 or greater than 132? What percentage of people has an IQ score greater than 116?
imagine you are a manager at a major bottling company. customers have begun to complain that the bottles of the brand
A recent survey by alumni of a major university indicated that average salary of 8000 of its 250,000 graduates was $120,000. Does this signify population parameter or sample statistic?
Scores are obtained from the Law School Admission Test (LSAT) are normally distributed with a mean score of 550 and a standard deviation of 110.
The makers of a soft drink want to identify the average age of its consumers. A sample of 16 consumers is taken. The average age in the sample was 22.5 years with a standard deviation of 5 years.
people gain weight when they take in more energy from food than they expend. a mayo clinic study investigated the link
Draw a graph that compares the success rate
question 1 draw ogives from the following data and measure the median value. verify it by actual calculation.central
if the digits 0 2 4 6 represent wins and the digits 1 3 5 7 represent lose then the random numbers 4657 1323 0236
in a study the use of gloves among nurses was observed. two populations of nurses were studied those who were in the
Of the 250 students in a blind taste test, 150 (60%) preferred Milwaukee's Best over Natural Light. Then the 90% confidence interval for the student population proportion preferring Milwaukee's Best is:
in a chemical experiment a solution is to be kept at 70 degrees celsius. at a randomly selected time the actual
Amy Lloyd is interested in leasing a new Honda and has contacted three automobile dealers for pricing information.
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