Find approximate probability that x is between 463 and 545
A regular six-faced fair die will be rolled 144 times. Let X be the sum of the 144 numbers obtained. Find the approximate probability that X is between 463 and 545.
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The television network you addressed in Week 4 is asking you to compare the moods of groups that watch different types of shows. You can choose what they mean by moods. You may compare them on general mood, happiness, depression, frustration, or a
Which of the following is a function of modern-day psychologists?
a manager of a supermarket estimated that 87% of customers use coupons in their grocery purchases. How large a sample is required to estimate the true proportion to within 0.01 with 98% confidence?
Who is responsible for the development of the dramaturgical approach that distinguishes between culturally prescribed roles and fulfillment of these roles?
At the .05 level of significance, is there evidence to suggest that the mean life length of the batteries produced by this manufacturer is more than 400 hours?
The annual per person consumption of Ice Cream is normally distributed with a mean of 16.5 lbs. and a standard deviation of 2.5 pounds. (U.S. Dept. of Agriculture) A. Find the probability that a randomly person consumes more than 20 pounds of Ice C
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What is the probability that the proportion of 400 freshmen that return to the same school for their sophomore year is less than 0.67?
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