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The diameter of an electric cable is normally distributed, with a mean of 0.8 inch and a standard deviation of 0.01 inch. What is the probability that the diameter will exceed 0.81 inch? (You may need to use the standard normal distribution table. Round your answer to three decimal places.)
Compute the approximate jp-value associated with the test statistic. Does the sample data support the null hypothesis at the a- 0.05 level?
a fair coin is tossed four times. what is the probability that the number of heads appearing on the first two tosses es
Describe a business situation where you would want to use a t-test. Why would you choose that test? What would you expect to show by doing this?
When we carry out a chi-square test of independence, the expected frequencies are based upon the Null hypothesis - true or false.
let x have normal distribution with mean 11.3 and standard deviation 5.7.find the cumulative probability of 9.31 or
What critical value should the company officials use to determine the rejection region?
a study of fill volumes is conducted at a food canning factory to determine the level of consistency between the two
Determine the probability that pregnancy will (a) last more than 300 days; (b) less than 240 days; (c) between 250 and 282 days.
The standard deviation of the population of adult female height scores is 3 inches. A random sample of 50 women yields a mean height of 64 inches. Calculate the standard error of the mean.
suppose that the service life in years of a hearing air batter is a random variable having a weibull distribution with
Surface area of a cube. The formula A=6V^2/3 gives the surface area of a cube in terms of its volume V. What is the volume of a cube with surface area 12 square feet?
From the shipment you take a random sample of 20. When sampling with replacement (binomial), determine the probability of obtaining: Exactly two defective components in the sample of 20.
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