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Supposed 57% of the registered voters in a country are Republican.
If a sample of 722 voters is selected, what is the probability that the sample proportion of Republicans will be less than 61%?
Using a sample of size n=120, what is the standad deviation of our estimator P? What is the probability that the sample proportion will be at least 0.45?"
a hockey team has 6 forwards 4 defensemen and 2 goalies. at any time 3 forwards 2 defensemen and 1 goalie can be on the
Compute a 95% confidence interval for the mean saline of the tears. You select a random sample of 100 tear drops. The sample has an average salt concentration of 0.1 with a standard deviation of 0.01.
If 100 percent of a days production is inspected whenever the sample of 10 gives 2 or more defectives, then what is the pobability that 100 percent of a days production will be inspected?
Are the data sufficient to that the herb has a significant effect on memory? Use a two-tailed test with α = .05.
Explain the use of normal probability plot to evaluate whether a set of data is normally distributed? Please discuss in detail.
Describe the difference in the determination of a confidence interval of a normal distribution if the variance is known or unknown.
A stockbroker at Critical Securities reported that the mean rate of return on a sample of 10 oil stocks was 12.6 percent with a standard deviation of 3.9 percent. The mean rate of return on a sample of 8 utility stocks was 10.9 percent with a stan..
in basketball a players free throws percentage ft is expressed as a number between 0 and 1 which represents the
in the laboratory a student performed an experiment in which the final length of a piece of wire was a significant
A die has half of the faces red and the other half black. The die is rolled 3 times. Let the random variable X represent the number of black outcomes out of three rolls. What is P(1) that is the probability if exactly one black outcome out of three r..
Using the .05 significance level, can we conclude that there is a positive association between the two variables?
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