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A total of 28 percent of males living in Nevada smoke cigarettes, 6 percent smoke cigars, and 3 percent smoke both cigars and cigarettes. What percentage of males smoke neither cigars nor cigarettes?
adult consumers at three fast-food hamburger chains at lunchtime in new york city were approached as they entered the
Consider two random variables X and Y. Suppose that the variance of X is 20, that this of Y is 10, and that the covariance of X and Y is 5. What is the variance of the random variable 2X+Y?
The management at Black Angus is considering hiring 8 additional servers. Currently 12 servers are serving 4 tables each per hour. Servers make $11.25 on overtime per hour.
q1. for the following questions would the following be considered significant if its probability is less than or equal
To see if his belief is substantiated, conduct the test at a suitable significant level. State the assumptions made. see if his belief is substantiated, conduct the test at a suitable significant level. State the assumptions made.
Develop percent frequency distribution and construct bar chart and pie chart.
Establish a 99% Confidence interval about the difference in the proportion of the town voters and county voters who favor the proposal.
Determine the value of test statistic z using z = ^p-P ^pq/n. Claim is that proportion of drowning deaths of children attributable to beaches is more than 0.25, and sample statistics.
Think of some of the factors in the study. How are they controlled?
One side of a rectangular stage is 2 meters longer than the other. If the diagonal is 10 meters, than what are the lengths of the sides?
Standard deviation of sample was $3.53. Determine point estimate of population mean. Determine the 95% confidence interval of population mean. Suppose the variable is normally distributed.
Sun Love grapefruit growers have determined that the diameters of their grapefruits are normally distributed with a mean of 4.5 inches and a standard deviation of 0.3 inches.
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