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During 1989, a certain trucking company purchased 500 tires from a local dealer. The dealer guaranteed the tires to withstand loads of up to 100,000 pounds at speeds up to 55 mph. The drivers for the trucking company complained that the tires were not living up to this guarantee and were failing the first trip they were used. The trucking company decided to sample the tires and send them to an engineering firm for testing. This testing is expensive and destructive; therefore, the sample size to be tested must be carefully chosen. Construct a sampling plan for the company by doing the following:
(a) Calculate the probability of getting all defective tires in samples of size 25, 30, and 50 for p = 0.80, 0.90, 0.95, and 0.99, where pis the probability that an individual tire will fail. (Use the binomial distribution.)
(b) Graph these probabilities against p for the various values of n on the same graph. Use this graph to suggest a sample size.
1. Willow Brook National Bank operates a drive-up teller window that allows customers to complete bank transactions without getting out of their cars. On weekday mornings, arrivals to the drive-up teller window occur at random, with an arrival ..
to determine whether the cash bonus paid by a company is related to annual pay data were gathered for 10 account
Assume the data set is a population. Calculate the range, variance, standard deviation, and interquartile range for the data set.
Compute a 0.95 confidence interval for the true probability using the R function binomci. What is the estimated probability that someone is optimistic, given that the person has a low income?
a new no-frills airline runs a commuter shuttle service using a refurbished world war ii bomber. the two-propeller
a. Use Excel to generate the appropriate ANOVA table. b. At the 5% significance level, is there interaction between fuel type and hybrid type?
You are about to go shopping to purchase a stereo system at a local store. Upon reading the newspaper, you find that another stereo store across town has the system you are interested in for $1089.99. You had been planning to spend $1099.95, the b..
Those who had consumed the vodka tonics had 35% more cravings than those who did not. Assuming that the assignment of subjects to the treatment (vodka) and control groups was made at random, do you think there are any confounding factors that would..
what is the probability that the total number of defects on the five bolts will be af least 6?
This airplane will be obsolete in 1 year, so all production of the spare part is to take place at present. The production costs now are $1,000 per item-that is, c 1,000-but they become $10,000 per item if they must be supplied at later dates-that ..
In studying the performance of the comapany's stock investments over the past year, the research manager of a mutual fund company finds that only 43% of the stocks returned more than the rate that had been expected at the beginning of the year.
Conditional on the fact that all six chosen balls are the same color, what is the conditional probability that this color is red?
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