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Auto glass companies now have a machine that can repair broken windshields with a success rate of 85%. If a random sample of six cars is taken from the customer Records, determine the probability that:
a. exactly two of the windshields were successfully repaired.
b. at least four windshields were successfully repaired.
Then comment on the effectiveness of the presentation: Were the frequency distributions used effectively to report the results? Why or why not?
Now suppose 3 of his customers want the same ring, and they will go to another store if its already been sold. Would it be appropriate to use the binomial distribution under these conditions? Why or why not?
Determine the probability that exactly 8 of them started smoking before 18 years of age.
During the past six months, 73.2% of US households purchased sugar. Assume that these expenditures are approximately normally distributed with a mean of $8.22 and a standard deviation of $1.10. 80% of the households spent more than what amount?
an article states that false-positives in polygraph tests i.e. tests in which an individual fails even though he or she
question 1 the average teachers salary in arizona is 42300 with standard deviation 5000. assuming a normal distribution
What control chart(s) would you use for this data and what are the final control limits?
nurses wondered if birth weights of babies are going up. they knew that the average birth weight of a baby last year
Can the company claim that they are faster than the average utility?
in a recent poll of 750 randomly selected adults 590 said that it is morally wrong to not report all income on tax
in the game of roulette a wheel consists of 38 slots numbered 0 00 1 2 ... 36. to play the game a metal ball is spun
If you want to be 95% confidence of estmating the population mean to within a sampling error of +-4 and the standard deviation is assumed to be 10, what sample size is required?
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