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In a gallup survey, 1087 randomly selected adults were asked "do you have occasion to use alcoholic beverages such as liquor, wine, or beer or are you a total abstainer?" The result: 62% of the subjects said that they used alcoholic beverages. Consider a hypothesis test that uses a 0.05 significance level to test the claim that the majoirty (more than 50%) of adults use the alcoholic beverages.
a. What is the test statistic
b. What is the critical value
c. What is the p-value
d. What is the conclusion
a radio manufacturer claims that 65 of teenagers 13 to 16 years old have their own portable radios. a researcher wishes
Is there sufficient evidence to indicate that the new quality control standards were effective in reducing the proportion of defective digital music players?
Tony, a single parent, spent $3,600 on after-school care for his six-year-old son. Tony received $1,200 as aid to families with dependent children from the State Department of Social Services (DSS) for child care as part of the welfare assistance ..
Suppose a certain oil producing country exports (1 + X) million barrels of oil per day, where X is a random variable having a normal distribution with mean zero and variance 1/25.
The weight of a 5th grader is normally distributed with a mean of 75 pounds and a variance of 113 pounds^2.
What are the Principle Functions of Parties? How do political parties get on the ballot?
The estimated simple linear regression equation minimizes the sum of the squared deviations between each value of Y and the line.
The CEO of the business has nothing better to do wheras measured the temperatures of 26 department managers 1 to 4 times every day to get a total of 123 measurements.
Does this sample provide enough evidence to conclude that self-esteem scores for group-participation adolescents are significantly different from those of the general population? Use a two-tailed test with α = .01.
A gun is fired straight upward. The bullet leaves the gun at 1000 ft. per sec. The equation for the bullet's velocity is v = -32 t + 1000. What is the velocity at 3 sec.?
A researcher hypothesizes that the lowering in cholesterol associated with weight loss is really due to exercise. To test this, the researcher carefully controls for exercise while comparing the cholesterol levels of a group of subjects who lose w..
a survey of a simple random sample of recent university graduates finds that six months after graduation 75 of the 400
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