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Over a period of time, for submarine sonar, analysts find that 8 % of their standard electronic modules malfunction within a particular time period. Within a series of installations, it has been noted 20 electronic modules reach the end of the period with none malfunctioning. What is the probability of this actually happening?
The average number of days absent per student per year at West Valley School is 17 days with a standard deviation of 4 days. How many standard deviations from the mean is 6 absent days?
Test the hypothesis that there is no difference in the mean scores of Exam 1 and Exam 2 against the alternative that the average is greater for the second exam.
Determine the likelihood of accepting a lot which is 1% defective?
Formulate the hypotheses that can be used to test the validity of the brokerage firm executive's claim.
How many commercials' worth of data do I need to have a margin of error no more than 3, the correct set of hypotheses
At the .01 significance level, is there a relationship between job pressure and age?
The researchers planned to use simple linear regression to see if the age at which a baby was first able to crawl could be predicted from the average outdoor temperature six months after each baby's birthdate.
Test the claim that the mean age of the prison population in one city is less than 26 years. Sample data are summarized as n = 25, x = 24.4 years, and s = 9.2 years. Use a significance level of α = 0.05.
What IQ score should one have in order to be eligible for Mensa?
Use frequency distribution to create a probability distribution, determine the (b) mean,(c) variance and (d) standard deviation of probability distribution and (e) interpret results in context of real life situation.
Which of the following(s) can be considered (a) variable(s)?
Make a forecast for 2004, using either the fitted trend model or a judgment forecast. Why is it best to ignore earlier years in this data set?
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