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An article states that movie attendance declined in 2005. A survey found that 720 of 1000 randomly selected adult Americans preferred to watch movies at home rather than at a movie theater. Is there convincing evidence that the majority of adult Americans prefer to watch movies at home? Test the relevant hypotheses using a 0.05 significance level. (For z give the answer to two decimal places. For P give the answer to four decimal places.)
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p=
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In a certain distribution of numbers the mean is 60 with a standard deviation of 8. Use Chebyshevs theorum to tell the probability that a number lies in each interval.
You are the principal of a large urban high school and wish to do a parent survey to determine how parents feel about same-sex classes.
about 34 of americans have type a blood. a blood drive gets 140 donors. what is the probability that at least 40 of
Obtain a 95% confidence interval for the mean monthly rent for two-bedroom apartments. Assume that measurements are normally distributed. Round to two decimal places.
three experiments delving into the relationship between the neccecisity for cognitive closure and persuasion were
Explain what the standard error of the mean represents and does the sampling distribution of x look like a Normal distribution if n is 10?
brake pads in a car need to be changed on after 7 years on average. the cost is normally distributed as n35050.a. what
"In each of the following situations, a hypothesis test for a population mean is needed. For each situation select the correct choice of the null hypothesis H0 and the alternative hypothesis Ha.
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.
For the binomial lattice model, Sn = S0 Y1 × · · ·×Yn , suppose p = 0.75,d = 0.90, u = 1.5:When r = 0.05: Show that the stochastic process Mn = Sn /(1 + r)n , n ≥ 0, forms a SUBmartingale.
Write the regression. Interpret the regression constant and regression coefficient. Forecast a value for monthly salary.
A simple random sample of front-seat occupants involved in car crashes is obtained. Among 2823 occupants not wearing seat belts, 31 were killed. Among 7765 occupants wearing seat belts, 16 were killed.
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