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a hairstyle researcher wants to conduct a study to see if blonds really do have more fun she obtains a sample of 10
a food company wants to know which type of salad would be best received by their customers they set up an experiment in
1 determine if a relationship exists between race ie white black asian pacific islander other and satisfaction with the
1 a weight-loss program enrolled 45 heterosexual couples did the husbands lose more weight than their wives the data
1 in a study of 72 women a researcher wants to know if cholesterol level is related to the womens highest attained
1 a group of researchers is interested in determining if a relationship exists between geographic area ie rural
1 how many ounces of alcohol are consumed in a week by undergraduate or graduate students the sample contains 130
instructors often suspect that the better students finish tests early to test this hypothesis an instructor noted both
a study was conducted to examine the effect of an herbal formula for insomnia a group of 13 volunteers was recruited
a manufacturing company uses five identical assembly lines to construct one model of an electric toaster all the
compute z-tests and find the one-tailed p-value for each of the following situations then write up the results of the
compute t-tests and find the critical value using a two-tailed test and an - level of 05 state your conclusionsa the
it has been argued that many cases of infant mortality rates are caused by teenage mothers who for various reasons do
a new method of teaching children to read promises more consistent improvement in reading ability across students the
the manager of a large office building needs to buy a large shipment of light bulbs after reviewing specifications and
a study of the effect of different types of anesthesia on the length of post-operative hospital stay yielded the
three sets of five mice were randomly selected to be placed in a standard maze but with different color doors the
a manufacturer of concrete bridge supports is interested in determining the effect of varying the sand content of
a large group of students take an examination top score 100 and the results are normally distributed the mean score on
data from 155 patients at a diabetes clinic include measures of their hba1c a measure of how controlled blood sugar is
an engineer was comparing the output from two different processes by independently sampling each one from process a she
the results of two independent samples from two populations are listed belowuse the 005 level of significance and test
1 the following weights in ounces resulted from a sample of laboratory rats on a particular diet use alpha 005 and
1 suppose that for a given population with sigma 72 we want to test h0mu 80 against h1mu lt 80 based on a sample of
1 a drug company is testing a drug intended to increase heart rate a sample of 100 yielded a mean increase of 14 beats