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The life of a calculator manufactured by Intel corporation has a normal distribution with a mean of 50 months and a standard deviation of one year. What should the warranty be to replace a malfunctioning calculator if the company does not want to replace more than 1% of all the calculator.
Find a 90% confidence interval for the mean decibel level µ for this type of transit vehicle.
An ANOVA procedure is used for data that was obtained from four sample groups each comprised of five observations. The degrees of freedom for the critical value of F are:
let the number of trials be n = 3, and let the probability of success be p = 0.0228. Use a calculator to compare:
For a sample of 11 independent observations from a normal distribution of unknown μ and unknown variance σ 2 , the sample mean is 74.6 and sample variance is 2.2. What is the lower point of the 90% confidence interval for μ?
Records also point to that interviewing committee of bank officers approves 85% of individuals they interview. Determine probability that Ann's loan request is approved.
Calculate the mean absolute deviation based on the 2-day moving average. You can have a forecast and an actual temperature.
We can think of this as the value of mew that maximizes f(y), the probability that our observed value of y occurs.
Four brands of light bulbs are being considered for use in the final assembly area of the Saturn plant in Spring Hill, Tennessee. The director of purchasing asked for samples of 100 from each manufacturer.
To test whether the significant difference between two proportion test using large sample test.
It has been evaluated that 30% of all farms are family-owned. In sample of 12 farms, determine the probability that exactly 3 farms are family owned?
If alpha level is changed from a = 0.05 to a = 0.01. What occurs to boundaries for critical region?
Find the percentage of buyers who said their price range is between $150,000 and $153,300.
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