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question 1find the area between -88 standard deviations below the mean and 235 standard deviations above the mean
a manufacturer of cereal has a machine that when working properly puts 20 ounces of cereal on average into a box with a
if the coefficient of determination is 0738 what percentage of the data about the regression line is
in a random sample ofnbsp50nbsprefrigerators the mean repair cost was 14600 and the population standard deviation is
a random sample of 19 college mens basketball games during the last season had an average attendance of 5046 with a
suppose a retailer claims that the average wait time for a customer on its support line isnbsp179nbspseconds a random
during the winter of 2008-2009 the average utility bill for residents of a certain state was 173 per month a random
determine the sample size n needed to construct a 99 confidence interval to estimate the population mean when sigma24
determine the sample size needed to construct a 90 confidence interval to estimate the average gpa for the student
the distribution of heights of adult american women is approximately normal with a mean of 64 inches and standard
a researcher wishes to estimate90 confidence the population proportion of adults who say chocolate is their favorite
a researcher wishes to estimate the mean number of hours per week that children in the 10 to 12 year age range spend
a psychologist examining art appreciation selected an abstract painting that had no obvious top or bottom hangers were
according to a researchnbspinstitution the average hotel price in a certain year was 9536 assume the population
a professional baseball pitcher takesnbsp1566nbspseconds to throw eachnbsppitch on average assume thenbsppitchers times
a popular restaurant wants to assess if there are any differences between customers who come at different times of day
a marketing company conducted a study where women and men were asked to express a preference for one of two
a survey in whichnbsp400nbspadults from the eastnbsp400nbspadults from the southnbsp400nbspadults from the midwest
a population has a mean mu83 and a standard deviation sigma26 find the mean and standard deviation of a sampling
in a survey ofnbsp2995nbspadultsnbsp1486nbspsay they have started paying bills online in the last year construct a 99
an assembly plant receives its voltage regulator from two different suppliers 75 percent comes from hayes voltage co
multicar accident often result in fatalities across the nation records are kept of the total number of accident
if the probability of making a type i error is decreased the probability of making a type-ii errora also decreasesb
a company making refrigerators strives for the internal temperature to have a mean of 375 degrees with a standard
from a random sample of 68 businesses it is found that the mean time that employees spend on personal issues each week