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in a survey of 120 publicly-traded companies the average price-earnings ratio was 185 with a standard deviation of 82
in the past the value of houses a local realtor has sold is normally distributed with a mean of 252000 with a standard
suppose that a grocery store buys milk for 210 and sells it for 260 if the milk gets old then the grocery store can
discuss why correlations do not necessarily mean causality describe two variables that may be highly correlated but do
suppose that the dividends of dividend-paying stocks are normally distributed with a mean of 386 as a percentage of the
suppose a firm raises 25 million dollars by issuing debt at a cost of 55 raises 13 million by issuing common stock at a
in a sample of 92 people who have had strokes the average cholesterol level was 254 with a standard deviation of 48 in
in a sample of 80 people who have had strokes the average cholesterol level was 250 with a standard deviation of 70 in
a manufacturer of alkaline batteries is concerned about the proportion of defective batteries it ships to retailersas
suppose the returns of a particular group of mutual funds are normally distributed with a mean of 124 and a standard
suppose that 10 of people who book airline tickets dont show up for their flight if an airplane has 180 seats and the
in a test of the effectiveness of garlic for lowering cholesterol48subjects were treated with garlic in a processed
an understanding of statistics is necessary for any job the use of statistics can help provide answers to many
an insurance company will sample recent health insurance claims to estimate the mean charge for a particular type of
an employer interviews 10 people for 6 customer service positions in a company and 5 of the 10 people are men if all 10
the average score on a standardized test is 750 points with a standard deviation of 50 points what is the probability
an auditor for american health insurance reports that 20 of policy holders submit a claim during the year 15 policy
suppose nbspyou want to find the approximate probability that a randomly selected family form los angeles eans nbspmore
a coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less than that
a time series trend equation for hammer hardware is y 56 12t where sales are in millions of dollars and t increases
a study by the national park service revealed that 50 of the vacationers going to the rocky mountain region visit
question about business statistics ma3000 is it possible to have a distribution that is symmetric but not normal if so
problem set 1whenever appropriate specify the null hypothesisyou must show your calculations by for example inserting a
an online site presented this question would the recent norovirus outbreak deter you from taking a cruise among the
in the week before and the week after a holiday there were 11 000 total deaths and 5434 of them occurred in the week