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During 2000, 3.2% of all U.S. households were burglary victims. For a simple random sample of 300 households from a certain region, suppose that 18 households were victimized by burglary during that year.
Apply an appropriate hypothesis test and the 0.05 level of significance in determining whether the region should be considered as having a burglary problem greater than that for the nation as a whole.
The waiting room for jury selection has 40 women and 30 men to choose from. A jury of 12 is selected from these 70 people, what is the probability that exactly 5 of the jury members will be women?
Suppose that X1, X2, . . .is a sequence of random variables with E(Xt2) 8 and E(Xt)=µ. a. If X1, X2, . . .is iid with E(Xi2) 8 and EXi=µ, where µis known, whatis the minimum mean squared error predictor of Xn+1in terms of X1, . . . , Xn?
A box contains 10 chips. The chips are numbered 1 through 10. Otherwise, the chips are identical. From this box, we draw one chip at random, and record its value.
Which of the following statements regarding the coefficient of correlation is true. A value of 0.00 indicates two variables are not related.
The entire shipment is accepted if only one or non of the tablets is defective. If the defect rate is 5% then what is the probability that the shipment will be accepted?
Thirty teeth were randomly allocated into three groups of 10 and a cavity in each tooth filled using one of three preparations. Perform Kruskal-Wallis tests for the PLP measurements. What is your conclusion
a manufacturer claims that its televisions have an average lifetime of at least five years 60 months with a population
fine motor skills were measured in a sample of kindergarteners before and after 6 months of occupational therapy.
Each of these systems functions, independently of the others, with probability 0.98. As long as at least one of these systems is functioning, this shuttle Component functions successfully.
a) Test appropriate hypotheses nd state your conclusion b) The boxplots of the two distributions show an outlier among the data north of Derby. What effect might that have had on your test?
If you know you need a sample size of 1,063 out of 300,000 to get a 95% confidence level and a 3% confidence interval what steps would you take to get a random sample?
Determine the plan using Handbook H-108 if the time to failure is exponentially distributed. Items that fail during the test are not replaced.
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