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According to data from the Environmental Protection Agency, the average daily water consumption for a household of four people in the United States is approximately at least 243 gallons. Suppose a state agency plans to test this claim using an alpha level equal to 0.05 and a random sample of 100 households with four people.
a) State the null and alternative hypotheses.
b) Calculate the probability of committing a Type II error if the population mean is 230 gallons. Assume that the population standard deviation is known to be 40 gallons.
All subjects in the study were questioned about lifestyle factors including alcohol, tea, and coffee consumption. The resulting data are as follows.
The shirt was a mesh polo shirt. Given this information, what is ths probability that the mesh polo shirt came from box 1?
Find the 95% confidence interval for the true population mean. Identify the point estimate for mean and margin of error.
At the .05 level, can we conclude-that women think men are less kind, gentle, and thoughtful in 2000 compared with 1990?
Of the 38 numbers on a roulette wheel, 18 are red, 18 are black and 2 are green. If the wheel is balanced, the probability of the wheel landing on red is 0.474.
Find the mean, median, mode, and midrange for these data.
q1. in a city in italy 30 of the families have a mastercard 20 have an american express card and 25 have a visa card.
Industry standards recommend that 9 percent of new vehicles need warranty service in the first year. Determine the probability that none of these vehicles needs warranty service?
Assume that you have selected 10 students enrolled at your college and have collected data for these three variables:
Define Autocorrelation in the following terms. In which type of regression is it likely to occur? What is the negative impact of autocorrelation in a regression?
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10.
Identify the implied population in the information here. Government agencies carefully monitor water quality and its effect on wetlands
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