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Individual truck drivers are either male or female. In the US 5% of all truck drivers are women, 95% are men. Suppose 20 US truck drivers are randomly selected to be interviewed about their pay.
a.What's the probability that fewer than 2 of the randomly selected truck drivers are women?b.What is the expected number of women in a random selection of 20 truck drivers?
A package of frozen vegetables has a label that says "contents 32 oz." The company that produces these packages knows that the weights are normally distributed with mean 32 oz. and has a standard deviation of 2 oz.
Assume the population proportion is 0.17 and a simple random sample of 850 households will be selected from the population. What is the probability that the sample proportion will be within ±0.02 of the population proportion?
Find out the p-value associated with test of hypothesis you conducted?
Let A be the event that the first casting selected is from the local supplier, and let B denote the event that the second casting is selected from the local supplier. Determine: P (A ∩ B)
Which two types of probability sampling are best suited for business research and statistical data analysis, and why?
What is the probability that the oven will cause a core to be defective? What is the probability that the temperature of the oven will range from 460 degree F to 470 degrees F?
How much should a healthy shetland pony weigh? Let X be the age of the ponies in months and y be the average weight of the ponies, in kilograms.
(a) State the hypothesis for a right-tailed test. (b) Obtain a test statistic and p-value assuming equal variances. Interpret these results. (c) Is the difference in mean scores large enough to be important?
Suppose it costs $2,500 to buy a defibrillator. Find the expected value of owning a defibrillator if there is a 4% probability that "Silver's Gym" will lose a lawsuit regarding its operation, with each lawsuit resulting in "Silver's Gym" being lia..
Find a 90% confidence interval on the difference in the mean number of production units for the two shifts.
Develop a point of the population standard deviation for life expectancy of VCRs.
Solve the equation x^2 + 8x - 2 = 0 using both-Write one paragraph describing which method you prefer and why.
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