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Using historical records, the personnel manager of a plant has determined the probability distribution of X, the number of employees absent per day.
It is:
x 0 1 2 3 4 5 6 7P(x) 0.005 0.025 0.31 0.34 0.22 0.08 0.019 0.001
a. Find the following probabilities:P(2 ≤ X ≤ 5)P(X >5)P(Xb. Calculate the mean of the populationc. Calculate the standard deviation of the population
Computing the mean, standard deviation values for the given data - Describe how statistics is being misused in this situation
Psychologists wanted to test whether a certain accelerated class' IQ was different than average. There were 25 students in the class; their mean IQ score was 108.
Two fair six-sided dice are tossed independently. Let X be value of first die, and Y value of second. Find out the expectations of following random variables.
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The professor wishes to use a random-number table to determine which letter choice should correspond to the correct answer for a question.
An urn contains 8 balls identical in every respect except color. There are 4 blue balls, 3 red balls, and 1 white ball.
Assuming that these are a random sample of all publicly traded companies, construct a 95% confidence interval for the overall noncompliance proportion.
Suppose that an automobile manufacturer designed a radically new lightweight engine and wants to recommend the grade of gasoline to use.
People in a large population average 60 inches tall. You take a random sample and will be given a dollar for each person in your sample who is over 65 inches tall.
Create a hypothesis and write out the eight steps used to apply a statistical test to your hypothesis.
A description of how you believe statistics can enrich and represent the results of a study, and an explanation of how statistics can be used to misrepresent the results of a study.
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