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If a random variable can take on a measurable infinite number of values (such as a person's weight, height, or temperature), one would use a discrete distribution.
True
False
Given the following number of hours between breakdowns for 4 machines, are the machines significantly different? If so, how are they different? Which machine is the best?
The average age of the women was 45.582 with a standard deviation of 5.143. He uses this information to calculate a 95% confidence interval for the differnce in means, (-11.41, -5.422). The best interpretation of this interval is which of the foll..
Suppose for a particular set of data r = 0.889, ybar = 5.5, n = 15 and the equation for the regression line is yhat = 3.5 + 2.5x. Find the best-predicted value of y given that x = 2.0.
The waiting time to place an order at a branch of a fast-food chain during the lunch hour has had population mean of 3.55 minutes, with a population standard deviation of 1.1 minute.
suppose a penny arcade worker is in charge of keeping ten machines in operation. the failure rate of each machine
To examine the effectiveness of its four annual advertising promotions, a mail order company has sent a questionnaire to each of its customers, asking how many of the previous year's promotions prompted orders that would not have otherwise been made.
The possible responses to the question "How would you rate our quality of service?" with 1=excellent, 2=good, 3=fair, 4=poor, describes what type of variable?
the acme light bulb company claims that the lifetimes of its 100-watt light bulbs follow a normal distribution with a
A unit for a telecommmunication system is to be designed so that the probability that it fails during a period of five years does not exceed 0.4. the unit is to be made up of (n) effectively identical componants each with an exponential failure di..
What is the p-value? Use a .05 level ofsignificance. What is your conclusion?
the national center for education statistics reported that 47 of college students work to pay for tuition and living
a.briefly restate your research area of interest.b.identify at least 2 variables for which you would utilize a repeated
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