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Printed circuit cards are placed in a functional test after being populated with semiconductor chips. A lot contains 140 cards, and 20 are selected without replacement for functional testing.
a.) If 20 cards are defective, what is the probability that at least 1 defective card is in the sample?
b.) If 5 cards are defective, what is the probability that at least 1 defective card appears in the sample?
What is the optimal strategy for producing 500 tons of newsprint pulp, 600 tons of packaging pulp, and 300 tons of print stock quality pulp at minimum cost?
An oil co. is drilling some wells. the results are described as either a dry well or a producer well. Past experience suggests that 10% of exploratory wells are producer wells.
All standard IQ test scores are normally distributed and are set up so that the mean score is 100. However, the standard deviation differs from test to test.
use two sums from part A and the computational formal to compute sum of square (SS)for the scores.
If 200 passengers take this flight, find the binomial and Poisson probability of no platinum flyers (round your answer to 4 decimal places).
What kind of statistical test best did you use?
Determine the sample size needed in order to be 99% confident that the sample proportion of the current customer accounts is within .03 of the true proportion of all current accounts for this company.
Do the confidence interval limits contain 98.6F? What does the sample suggest about the use of 98.6F as the mean body temp.
The average height of flowering cherry trees in a nursery is 11 feet. If the heights are normally distributed with a standard deviation of 1.6, find the probability that a randomly selected cherry tree in this nursery is less than 13 feet tall.
Average electric use was studied.a previously known population standard deviation was 450KWH. a sample of 81 houses was studied and found to have a mean of 1858 KWH. Find the 95% confidence interval for the true mean.
What is wrong with this design? What confounds could be leading to the results of improved memory and problem-solving skills?
Write down the probability of that the median of the sample or average medians is greater or more than 320 minutes?
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