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Production equipment needs maintenance if it is out of tolerance on 4.5% of the items processed, and it is operating satisfactorily if it is out of tolerance on only 0.8% of its output. A test is performed involving 50 sample items. If the sample proportion of out-of-tolerance items is greater than 0.02, the equipment will undergo maintenance. Otherwise it will be allowed to continue operating.
what is the probability that the equipment will undergo maintenance if it is performing satisfactorily?
what is the probability that the equipment will not undergo maintenance if it is not performing satisfactorily?
Completion of today's paper. If X denotes the number of papers belonging to seniors among those checked, will X have a binomial distributuin?
We toss an unfair coin 100 times in a row. We play according to following rules: If tail: +$1 If head: -$1.45 P (head=0.4) Estimate chances to earn at least $3 at the end of
There is a strong relationship between the amount of money people spend and the amount people save (in other words, people who spend more tend to save more). Does this mean
Construct a 98% confidence interval for the average life expectancy of countries around the world. The data appear to be normally distributed.
It is estimated that the competitor will submit a bid for the contract with probability 0.40. What is the probability of getting the deal?
Make a histogram showing the distribution of the number of broken pieces in the 24 batches of pottery examined.- What aspect of the company's problem is more apparent in the s
Test the null hypothesis that there is no difference between the two age groups by conducting a difference-in-proportions test on the proportion of people who are rooting for
Write-up of 1 to 2 page or an essay for the following questions. What is a nonparametric procedure? Describe specifically when you would utilize a nonparametric test.
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