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The diameters of peaches in a certain orchard are normally distributed with a mean of 4.14 inches and a standard deviation of 0.61 inches. Show all work. What percentage of the peaches in this orchard is larger than 4.05 inches?
Find the probability of accepting a lot as a function of the actual fraction of defective chips. In particular, let the actual fraction of defective chips in a given lot equal any of 0.02, 0.04, 0.06, 0.08, 0.10, 0.12, 0.14, 0.16, 0.18. Then compu..
If a male soldier and female soldier are paired up what will be the mean and standard deviation for the difference in heights for each possible pair?
hamilton county judges try thousands of cases per year. in an overwhelming majority of the cases disposed the verdict
In 2010, the average age of students at UTC was 22 with a standard deviation of 3.96. In 2013, the average age was 24 with a standard deviation of 4.08. In which year do the ages show a more dispersed distribution? Show your complete work and supp..
Why are you no longer directly comparing sample means? How does using the F test - the analysis of variance (ANOVA) reduce your Type I error rate? What is the difference between a within-groups and a between-groups variance?
a group of statistics students decided to conduct a survey at their university to find the average mean amount of time
There is concern about the percent of on-time flights. A recent survey of two major airlines yielded the following results. At α = 0.05 test the claim that there is a difference in proportions of on-time flights.
Your office has just received 140 insurance claims to be processed in the next few days. Find the following probabilities.
Compute the Pearson correlation. Multiply each X value by 2 and compute the Pearson correlation for the modified scores.
Based on these results, the proportion of the variation in 1993 winnings that is explained by the average number of putts per round and driving distance
The New York Times reported (L.J> Flynn, Tax Surfing, The New York Times, March 25, 2002, p. C10) that the mean time to download the home page for the internal Revenue Service (IRS) , was 0.8 second. Suppose that the download time was normally di..
Identify the null hypothesis, alternative hypothesis, test statistic, p-value or critical value(s), conclusion about the null hypothesis, and final conclusion that addresses the original claim.
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