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In given problem, what is the probability that the sample proportion will be at least 0.45?
ProblemWhen sampling is for a population proportion from a population with actual proportion p = 0.5, using a sample of size n = 120, what is the standard deviation of our estimator P^?
A sample of 3000 observations has a mean of 82 and a standard deviation of 16. Using the empirical rule, find what percentage of the observations fall in the intervals , and x+/- 1s, x+/- 2s x+/- 3s.
2 cards drawn from a 52 but before the second card is drawn you put the first one back and reshuffle the deck. Are the outcomes on the two cards independent and why?
Suppose that you perform a significance test regarding a population mean, and that the evidence does not warrant rejection of the null hypothesis.
Describe the shape of the histogram using the standard terminology of histograms. Would you describe per capita income as being fairly homogenous across the United States?
Define the probability density and cumulative probability function for an absolutely continuous random variable. Which of these functions is analogous to the probability mass function of a discrete random variable?
the quality of evidence in support of a recommendation depends on which of the following?a. the p values of the
Draw a sketch of the standard normal distribution curves, one for the current process and another one for the recentered process. Label the spec limits and shade the area of the curve that corresponds to your answer.
someone is interested in studying property tax rates in the united states. he randomly selects 25 homes and looks up
q1. the mean of a normal probability distribution is 60 the standard deviation is 5.a what percent of the observations
For a regional survey of suburban households to obtain data on television viewing habits, a statistical sample of suburban areas is first selected. Within the chosen areas, statistical samples of whole blocks are selected; and within the selected..
One set of 12 pairs of scores, X and Y values, produces a correlation of r = 0.90. If SSy = 200, find the standard error of estimate for the regression line.
suppose a compact disk cd you just purchased has 15 tracks. after listening to the cd you decide that you like 6 of the
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