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A researcher is examining preferences among four new flavors of ice cream. A sample of n = 80 people is obtained. Each person tastes all four flavors and then picks a favorite. The distribution of preferences is as follows. Do these data indicate any significance preferences among the four flavors? Test at the .05 level of significance.
What is the probability that a simple random sample of automobile insurance policies will have a sample mean within 25 of the popluation mean.
are you annoyed with spam e-mail? suppose a random sample of 200 penn state students was asked this question of which
Use graphical sensitivity analysis to find out range of probabilities of state of nature S1 for which each of decision alternatives has largest expected value.
In testing a new drug, researchers found that 20% of all patients using it will have a mild side effect. A random sample of 13 patients using the drug is selected. Find the probability that: exactly three will have this mild side effect.
Test whether the mean rate is less than 6%. Use P-value approach.
In random, independent samples of 250 adults and 375 teenagers who watched a certain television show, 147 adults and 228 teens indicated that they liked the show.
Does the 99% confidence interval contain the actual population mean? If not, explain why not. What proportion of many similarly constructed confidence intervals should include the true population mean value?
Suzie's Sweatshirts is a home-based company that makes upscale, hand painted sweatshirts for children. Forecasts of sales for the next year are Autumn: 125
ann is waiting in line at the dmv. her waiting time is described by the random variable x in minutes with the following
Determine whether descriptive or inferential statistics have been used in the statement below:
an office has the following types of employees.femalemaleadministrative2021managerial1210operational4238if one person
john goes hunting for wild ducks every saturday. he always loads his shotgun with three shells. from past experience it
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