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Research on new juvenile delinquents revealed that 38% of them committed another crime. What is the probability that of the last 100 new juvenile delinquents put on probation, 30 or more will commit another crime?
It has been estimated that 30% of all farms are family-owned. In a sample of 12 farms, what is the probability that exactly three farms are family owned?
What happens to the expected return and standard deviation of returns of the portfolio in Part a if the following conditions exist?
Probability for simple and compound events.A certain bowler can bowl a strike 70% of the time. What is the probability that she.
Results were analyzed using one -way ANOVA and included SSTR =7 , 102 and SSE = 10 ,511. Are all 8 tapes equally appealing on average? Determine p value?
If W denotes the total number of spaces one moves under these special conditions, find the mean and standard deviation of W.
Black Hole Pizza Parlor instructs its cooks to put a "handful" of cheese on each large pizza. A random sample of six such handfuls were weighed.
The population of lengths of aluminium-coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.2 inches.
Calculate the mean and standard deviation of the following data sets, then produce a five number summary and box plot of data.
Construct a 90 percent confidence interval for the true mean weight. Describe factors which might cause variation in the weight of Tootsie Rolls during manufacture.
As it is a 2 × 2 table, try also two-tailed two-sample z test for π 1 = π 2 and verify that z 2 is same as your chi-square statistic. Which test do you prefer? Explain why?
If the standard deviation is $89.46, find the probability that a randomly selected customer spends between $550.67 and $836.94.
It was reported that 20 readers responded and 87% said "no" while 13% said "yes." Recognize 4 major flaws in this survey.
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