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In doing "observational studies" while driving through suburban neighborhoods during the summer months, home burglars look for potential victims who are away on vacation.
What kinds of observation indicators would tend to tell the burglars that a family is likely away on vacation?
What are some of the strategies that vacationing homeowners might use in attempting to fool potential burglars into thinking they are not away on vacation?
question refer to the article entitled 21st birthday from the penn state pulse january 2001. located in the library
The mean was 56 and the standard deviation was 20. On the second exam, she scored 82; the mean was 74 and the standard deviation was 5. On which exam did she do better?
Find two values of the standard normal random variable, z and -z, such that the two corresponding tail areas of the distribution add to 0.01.
Write a MATLAB program to calculate the probability if is a Gaussian random variable for an arbitrary a and b > 0 Note you will have to specify the mean and variance of the Gaussian random variable.
Critically discuss the auto-covariance function of a stationary time series and its basic properties.
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.
a candy maker produces mints that have label weight of 20 grams on each box. assume that the weight of a box of mints
After testing whether social class and welfare spending were related, you derive a chi-square (obtained) of 17.64, with 6 degrees of freedom. If alpha is set at 0.01, what is your conclusion and interpretation?
For the standard normal distribution, determine the following probabilities: Pr(Z ≥ 2.05)
To obtain data, the obituary columns of the New York Times are read for 30 days, and the ages at death of people in the United States are noted. Do you think this approach will lead to a representative sample?
A microwave oven repairer says that the mean repair cost for damaged microwave oven is less than $90. You work for the repairer and want to test this claim.
If 82% of scheduled flights actually take place and cancellations are independent events, what is the probability that 3 separate flights will take place?
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