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in a survey of 3175 adults1487 say they have paid their bills online in the last year construct a 99 confidence
the companys cleaning service states that they spend more than 46 minutes each time the cleaning service is there the
describe the scales of measurement of data that should be summarized by a measure of location such as a sample mean and
the weights of bags of peas are normally distributed with a mean of 1208 ounces and a standard deviation of 103 ounces
the proportion of people who love dogs is known to be 75 australia wide a town in far north queensland is often
confidence1the daily sales of burger baby restaurants follow the normal distribution with a standard deviation of 4000a
the waiting time for a pizza order is supposed to be no more than 10 minutes some complaints have been received that
someone reasons that when a coin is tossed there are three possible outcomes it comes up heads or tails or it lands on
two pediatricians want to investigate a new laboratory test that identifies streptococcal infection dr kidd uses the
a diamond can be classified as either gem qulaity or industrial grade suppose that 92 of diamonds are classified as
tossing a fair coin three times whats the probability that at least one head will
a study if the impact of stress on the amount of beta-endorphins released in the blood was reported researchers took
use the information below to answer the questions that followwhile the mars candy company no longer reports the
the number of facets in the eye of the fruit fly drosophila melanogaster is of interest in genetics to model changes
a stocks price fluctuations are approximately normally distributed with a mean of 2694 and a standard deviation of 354
in the health abc studynbsp522nbspsubjects owned a pet andnbsp1968nbspsubjects did not among the pet owners there
now assume that i am talking about a normally distributed set of data an iq test this iq test has a mean of 100 and a
a professor determines that 95 of her students prefer getting weekly homework assignments to solving two in-class
1 summary statistics for returns on two stocks x and y are listed belowmeanvariancestock x 283 0006000stock y 598
useby using we need write the answerdownloadfilehttpwwwopenintroorgstatdataamesrdata destfile
the amounts in dollars spent by 20 families for dinner at a restaurant are given on the
the mean of a population of raw scores is 50 ox18 what is the probability of randomly selecting a sample of 40 score
returns on stocks x and y are listed belowperiod 1 2 3 4 5 6 7stock x 47-240010-1stock y 2-574611-4consider a portfolio
a test of the null hypothesisnbsph0nbspmunbspnbspmu0nbspgives test statisticnbspznbspnbsp-058nbspnbspround your answers