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Based on the included information, how would I arrive at the last question?
(a) A random sample of size 144 is taken from the local population of grade-school children. Each child estimates the number of hours per week spent watching TV. At this point, what can be said about the sampling distribution?
(b) Assume that a standard deviation, of 8 hours describes the TV estimates for the local population of schoolchildren. At this point, what can be said about the sampling distribution?
(c) Assume that a mean, of 21 hours describes the TV estimates for the local population of schoolchildren. Now what can be said about the sampling distribution?
(d) Roughly speaking, the sample means in the sampling distribution should deviate, on average, about ___ hours from the mean of the sampling distribution and from the mean of the population.
Statisticians conduct hypothesis testing by taking a sample from a population of interest. The hypotheses are always a testable (measurable)
Standard deviation of 0.17 ounces, assuming the weight of cereal is normally distributed, determine the likelihood that a package will contain more than 12.2 ounces?
Discuss the problem of finding a confidence interval for the difference µ1 - µ2 between the \wo means of two normal distributions if the variances uf and ""i are known but not necessarily equal.
A survey showed that 23 % of college students read newspapers on a regular basis and that 83 % of college students regularly watch the news on TV. The survey also showed that 20 % of college students both follow TV news regularly and read newspape..
How many different committees on community development are possible?- Suppose the committee members are selected at random. What is the probability of a committee consisting of all Republicans?
The campus bookstore must decide how many textbooks to order for a course that will be offered only once. The number of students who will take the course is a random variable D, whose distribution can be approximated by a (continuous) uniform dist..
Mike has est that the store sells about 800 SONY sets annually. Estimated holding cost is $30 per set and ordering cost is $20 per order. Describe the inventory pattern graphically.
the mean score on a physical fitness test for division i student-athletes is 947 with a standard deviation of 205. if
the following data represent the number of flash drives sold per day at a local computer shop and their prices.price x
Roulette An American roulette wheel has 38 slots with numbers 1 through 36, 0, and 00, as shown in the figure. Of the numbered slots, 18 are red, 18 are black.
How much confidence would you place in using 27% as an estimate of the fraction of people who use emoticons?
you plan to develop a new software system that you believe will surpass the success of google and facebook combined. in
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