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Refer to given Exercise. Now define the statistic of interest to be the proportion correct, X/10. What is the mean of the sampling distribution of this statistic? Explain how you found your answer.
Exercise Suppose someone who takes a ten-question true-false test doesn't know any of the answers and randomly selects true or false for each question. Define the statistic X = number correct.
a. Describe the sampling distribution of X. (Hint: This distribution was introduced in Chapter 8.)
b. What is the mean of this sampling distribution?
c. What is the standard deviation of this sampling distribution?
Develop a 95% confidence interval for the amount of total itemized deductions for all taxpayers with an adjusted gross income of $52,500 (to the nearest whole number).
A population of data from a paper supply company is known to have a mean weight of 55 ounces per ream and a population standard deviation of 5 ounces. The population is known to be bell shaped and symmetrical.
The time between the successive renewals, for a certain renewal process {N(t),t ≥ 0}, is a continuous random variable whose probability density function is the following:
A Company produces candy on a production line. When operating properly, the production process will produce an average of u=140 pounds of candy per hour with a standard deviation of o=20 pounds of candy per hour.
A simplified version of the attitude rate control for the F-94 or X-15 type aircraft is shown in Figure P10.3. When the vehicle is flying at four times the speed of sound (Mach 4) at an altitude of 100,000 ft, the parameters are [26]
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