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Regression line drawn as y = c + 1075x, when x was 2, and y was 239, given that y intercept was 11. Calculate the residual
Describe a 5-step hypothesis test of multiple means (using the one-factor or the two-factor ANOVA test process) for a particular claim related to your work or life environment.
Infers that less than 60% of the items are sold within 1 week. Find the probability of the type I error, then state your conclusion in words of the problem at a level of significance of 0.07.
In a surgey of 280 adults over 50.80%; said they were taking vitamin supplements. Find the margin of error for this survey if we want a 99% confidence in our estimate of the percent of adults over 50 who take vitamin supplements.
a university found that 30 of its students withdraw without completing the introductory statistics course. assume
the p-value for testing the hypoteheses h0 ? 30 versus ha ? gt 30 isnbsp0.032.does thenbsp95nbspconfidence interval
Delta Airlines quotes a flight time of 2 hrs, 5 minutes for its flights from Cincinnati to Tampa. We belive that actual flight times are uniformly distriubted between 2 hours and 2 hours 20 minutes.
suppose a random sample of 90 measurements is selected from a population with a mean of 35 and a variance of 300.
If 9 students (9 = size of the sample) selected randomly attended the school, what's the likelihood that their mean number of attended days will be within 10 days of the population mean?
The annual income of a large group of supervisors at Belco Industries follows the normal distribution. The mean amount earned yearly is $48,000 and the standard deviation is $1,200.
If the population standard deviation is σ = 20 is the 6 point effect large enough to be statistically significant? Use the two - tailed test with α = .05
If the probability of getting caught is .02, the probability of getting a ticket is .97 and the probabiity of having to pay the ticket is .94, what is the direct cost of running a red light.
a researcher uses a repeated-measures study to compare two treatment conditions with a set of 20 scores in each
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