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The rate of defects among CD players of a certain brand is 1.1%. Use the Poisson approximation to the binomial distribution to find the probability that among 240 such CD players received by a store, there is at most one defective CD player.
The populations must all be normally distributed, what is meant by normally distributed?
Given sample data arranged in a frequency distribution table. Use Excel to calculate the sample mean and variance from this data set.
Assume that female students' heights are normally distributed with a mean given by µ = 67.2 in. and a standard deviation given by σ = 3.6 in.
Suppose the assembly times follow normal distribution. Find out z values for 29 and 34 hours. What percent of garages take between 32 hours and 34 hours to erect?
In chi-square goodness-of-fit test when there is close agreement between observed frequency and expected frequency, chi-square test value will be small.
What control limits should be applied to his sample?
Construct the 90% and 95% interval estimates for the population mean weekly sales.
The best estimator or appreciative of the population proportion is 0.45. How large must the sample be?
If one invested in Stock A, Determine standard deviation of percentage return?
By using standard normal table, determine critical value (or values) for= 0.14 right-tailed test.
Normal approximation to the Binomial distribution - Evaluate the probability that at least 195 of the students are female.
Calculate an 85% confidence interval for the population mean number of wolf pups per den at southwestern United States (US).
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