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According to ABI Research Company, more than 75% of the people who go to WAWA purchase candy. A random sample of 400 people showed that 312 people purchased candy. Can you conclude at the .01 significance level the claim of more than 75% of WAWA's customers purchase candy? State the null hypothesis and the alternate hypothesis.
optimism and longevitya cancer specialist from the los angeles county general hospital lacgh rated patient optimism in
a polling company reported that 27 of 2286 surveyed adults said that they play football.a. what is the exact value that
the iqs of 600 applicants of a certain college are approximately normally distributed with a mean of 115 and a standard
Grand Strand Family Medical Center is specifically set up to treat minor medical emergencies for visitors to the Myrtle Beach area. There are two facilities, one in the Little River Area and the other in Murrells Inlet.
a high-volume printer produces minor print-quality errors on a test pattern of 1000 pages of text according to a
Given the variances of the two samples below, find the test value and the degrees of freedom that should be used in an F test.
State a type I error and describe why it happens. Describe the factor that researcher can control to change type I error. Also, describe how type I errors can be avoided.
If a random sample of 10 people found that 9 were pro-life (i.e., 90%), while another random sample of 1,000 people from the same population found that 550 were pro-life (i.e., 55%), which would you find more significant?
suppose that you were trying to determine if the population proportion of americans that currently believe that nuclear
Are these results sufficient to conclude that the self-hypnosis has a significant effect? Assume that increasing and decreasing allergic reactions are equally likely if the training has no effect. Use an alpha of .05."
a die has half of the faces red and the other half black. the die is rolled 3 times. let the random variable x
Look at the most recent Statistical Abstract of the United States (www.census.gov/compendia/statab/) and make a two-way table that provides the counts of deaths due to accidents from various causes for three different age groups. What do you concl..
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