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Manhole covers must be a minimum of 22 in. in diameter, but can be as much as 60 in. Men have shoulder widths that are normally distributed with a mean of 18.2 and a standard deviation of 2.09 in. Assume that a manhole cover is constructed with a diameter of 22.5 in. What percentage of men will fit into a manhole with this diameter?
steam flows through a pipe at an average temperature t 200 c the inner and outer radii of the pipe are r1 8 cm and r2
?(a) Are the these events? selecting a carton with a? puncture and? selecting a carton with a smashed? corner mutually? exclusive?
Lying to a teacher. One of the questions in a survey of high school students asked about lying to teachers. Calculate appropriate percents to describe results
The owner of a gas station wants to study gasoline purchasing habits of motorists at his station. He selects a random sample of 60 motorists
Give a 95% confidence interval for the average lengths of all pins produced.- Give a 99% confidence interval for the average lengths of all pins produced.
in a town 31 of the residents contributed to the republicans 45 contributed to the democrats and 12 contributed to
suppose that the time to failure of a particular part in a system has an exponential distribution with expected time to
Explain which of the conditions for a binomial experiment is not met for each of the following random variables.
"Assuming that all else remains constant, the length of a confidence interval for a population mean increases whenever the confidence level and sample size increase simultaneously."
Discuss how the statistical application of Pearson r is used for hypothesis testing.l Through application of the Spearman Correlation discuss what type of data the Pearson formula can be used for.
Describe the sampling distribution for the sample mean sale price of the selected cards.
Based upon this data find a 99% confidence interval for the population difference in proportions of children in each group that use a computer each day.
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