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Question: Smart kids A school counselor wants to know how smart the students in her school are. She gets funding from the principal to give an IQ test to an SRS of 60 of the over 1000 students in the school. The mean IQ score was 114.98 and the standard deviation was 14.80.34
(a) Define the parameter m in this setting.
(b) Check the conditions for constructing a confidence interval for m.
(c) Construct a 90% confidence interval for the mean IQ score of students at the school.
(d) Interpret your result from part (c) in context.
Makers of generic drugs are required to demonstrate that their generic drug does not differ significantly from the "reference" drug it is intended to imitate.
When ordering a personal computer, a customer can add the following features to the basic configuration: (1) additional memory, (2) flat panel display, (3) professional software, and (4) wireless modem.
a study by becker associates a san diego travel consultant found that 30 of the traveling public said that their
Conduct a hypothesis test (at a = .01) to determine if the true mean social interaction score of all Connecticut mental health patients differs from 3.
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On each hand, the high roller will win $1 with probability 0.48 and lose $1 with probability 0.52. After the 500 hands, what is the probability.
The researcher wants to know whether either pesticide works and whether there is a significant difference in effectiveness between them. Design an appropriate experiment.
What is the probability that exactly 9 of the children are cured? Report your answer to four decimal places, rounding in the usual way?
Suppose that the census indicates the average American earns $36,345.45 per year. You are interested in the whether people who majored in political science earn an amount that is different than the average American.
A survey asked tax accounting firms their business form (S = sole proprietorship, P = partnership, C = corporation) and type of risk insurance they carry (L = liability only, T = property loss only, B = both liability and property).
Because of the population problem, in China, married couples lose various governmental benefits after the birth of which child?
The median of 1.50 is a better measure of the center than the mean of 34.83 because of the outlier value of 414 seconds. What is the sample variance and standard deviation for these 30 numbers?
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