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An epidemiologist plans a survey to estimate the prevalence of Alzheimer's disease in the population of adults aged 65 years or older. The desired margin of error for a 95% confidence interval is to be no more than 3%. What sample size is needed?
iq data is thought to be normally distributed with a mean of 100 and a standard deviation of 15. the average iq score
1. The structure of these data resembles the structure of the data in the pricing example, but there are differences. (a) If we consider the satisfaction data as an experiment, with response Rating, are the data balanced?
Compute the range, variance and standard deviation of a data set. Construct a boxplot and five-point summary of a given data set. Analyze a data set using measures of spread
What is the probability that Player I (given his information) describes to the event A?- What is the probability that Player II describes to the event A?
Height X of adult women are normally distributed with mean 63.7 inches and standard deviation 2.71 iches. Romeo who is 68.25 inches tall wishes to date only women who are shorter than he but within 4 inches of his height. Find the probability ..
1. a sample survey of 54 discount brokers showed that the mean price charged for a trade of 100 shares at 50 per share
The data follow. Males Females 27 25 25 29 19 18 10 23 16 20 22 15 14 19 (a) What statistical test should be used to analyze these data?
according to the internal revenue service income tax returns one year averaged 1332 in refunds for taxpayers with a
Find the equation of the Ellipse whose foci coincide with the foci of the hyperbola x^2 - 3y^2 - 2x - 12y + 1 = 0 and whose eccentricity is the reciprocal of that of the hyperbola and sketch both curves.
What are the four main apostate acts ('Kuraihats') prohibited for a Sikh?
To investigate the efficacy of a diet, a random sample of 16 male patients is drawn from a population of adult males using the diet. The weight of each individual in the sample is taken at the start of the diet and at a medical follow up 4 weeks l..
Based on the F distribution tables, what is the most accurate statement that can be made about the p-value for this test?
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