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Random sample of 900 SAT scores has a sample mean of 1100. Assume that SAT scores have a population standard deviation of 300.
(a) Construct a 95% confidence interval estimate of the mean SAT scores. Show all work. Just the answer, without supporting work, will receive no credit. Include description of how confidence interval was constructed.
(b) Describe the confidence interval in everyday language.
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Inverse Babies in the United States have a mean birth length of 20.5 inches with a standard deviation of 0.90 inch.
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for a poll 43 of 21944 people polled answered yes to the given question. given that 43 is the best estimate of the
What is the chance? students over age 21 students under age 21 Why is your sample not an SRS? These combinations of students have equal chances of being interviewed.
Right-split and up-split can be expressed as instances of a general splitting operation. Define a procedure split with the property that evaluating (define right-split (split beside below)) (define up-split (split below beside)) produces procedure..
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Do these data support the theory that the homicide rate is not the same over the four seasons? Test the relevant hypotheses using a significance level of .05.
Develop 95% confidence intervals for the proportion of all students. What advice would you give to the dean based upon your analysis of the data?
What is the probability of finding the particle in the ground state of the system? What can be said about the probability of finding the particle in the second excited state E2 given that only 1000 measurements have been made?
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