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A United Nations report shows the mean family income for Mexican migrants to the United States is $26,700 per year. A FLOC (Farm Labor Organizing Committee) evaluation of 21 Mexican family units reveals a mean to be $28,450 with a sample standard deviation of $10,850. Does this information disagree with the United Nations report? Apply the 0.01 significance level.
A sample of 47 observations is selected from a normal population. The sample mean is 30, and the population standard deviation is 5. Conduct the following test of hypothesis using the 0.05 significance level.
in a study of pregnant women and their ability to correctly predict the sex of their baby 59 of the pregnant women had
suppose that x is a continuous random variable with probability density function fx x18 over the interval 0 ? x ? 6.
The amounts (in ounces) of juice in eight randomly selected juice bottles from a normally distributed population are given below. Construct a 95% confidence interval for the mean amount of juice in all such bottles. Round the confidence interval ..
Estimate with 95% confidence the mean reduction in time it takes for someone who has taken the sleeping pill to fall asleep.
in a community 40 of the population is smoker. i randomly choose 60 residents from that community and ask if each of
a test consists of 10 true or false questions. to pass the test a student must answer at least 8 questions correctly.
a tour operator believes that the model px 40x - .25x2 can be used to predict his profit px for selling x tickets.
Effective on 80% of women and 65% of men. it is known that 66% of the people who take drug are women. That is the probability that the drug is effective?
an airline operates a call center to handle customer questions and complaints. the airline monitors a sample of calls
STAT11048 (T1, 2016) - Assessment. In a mathematics test, a random sample of 2025 sixth graders had a mean score of 68.1 and a standard deviation of 9. Calculate the 95% confidence interval for the population mean
in a survey of 500 residents 300 were opossed to the use of the photo-cop for issuing traffic tickets. find a 95
what has requirements about the shape of population? the answer has 15 letters
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