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A recent study found that the average age of people who watch the evening news is 39 years old. We suspect that the actual average age is greater than this. We survey 48 viewers of the evening news and we find that their average age is 43. Is this sufficient evidence to suggest that the age of people who watch the evening news is greater than what was reported? Standard deviation of 11 years and significance level of .10.
The paper "Debt Literacy, Financial Experiences and Over-Indebtedness" (Social Science Research Network, Working paper W14808, 2008) included
A social psychologist recently developed a childhood memories test that is intended to measure how people recall pleasant and unpleasant memories from childhood
The lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 5 hours.
What is the probability that the sum of their scores exceeds 1200 and probability that the average of the scores of all 400 student
For parts (a) and (b), tell who or what individuals are being studied, identify the variable of interest, and tell whether it is categorical or quantitative
Start rolling dice until a particular number, say 3, is obtained, and keep track of how many rolls are necessary. Repeat 100 times. Then find the average.
assume that adults have iq scores that are normally distributed with a mean of 100 and a standarddeviation of 15 as on
For a population with a Standard Deviation (s) of 5, a score of X = 55 corresponds to a Z score of 2.00. Find the mean for this distribution.
Revolution is a dynamic process with consequences no one can anticipate. Explain the initial goals of the colonists in 1765 at the time of the Stamp Act and the evolution of their ultimate decision to declare independence in 1776. What were the po..
A telephone call from a certain person is received some time between 7:00 A.M. and 9:10 A.M. every day. Define a sample space for this phenomenon, and describe the event that the call arrives within 15 minutes of the hour.
Using the notation of this section, let U be the number of observed values of X in the smallest d items of the combined sample of m + n items.
Determine expectation of number of vehicles passing through this specified point in ten minutes.
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