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A sample of 6 adult elephants had an average weight of 12,200 pounds, with a sample standard deviation of 200 pounds. We know the sample is from a normal distribution. The 95% confidence interval of the true mean is?
Estimate a multiple regression model using revenue as your dependent variable. For independent variables, include population, average income, screens, theatre age, and dummy variables for mall and strip mall.
You are dealt 2 cards successively without replacement from a shuffled deck of 52 cards. Find the probability that the first card is a king and the second card is a queen.
The owner of a local night club has recently surveyed a random sample of n=250 customers of the club. She would now like to determine whether or not the mean age of her customers is over 30.
Determine percentage of employees has 5 dependents? Of all employees which have at least one dependent, determine percentage has more than one?
For one consumer product the mean dollar sales per retail outlet last year in a sample of 15 was $3,425 with a standard deviation of $500. For a second product the mean dollar sales per outlet in a sample of 12 stores was $3,250 with a standard de..
If you randomly assign participants to groups, can you suppose the groups are equivalent at the beginning of the study?
If we have 2 groups with 2 characteristics each, what would our critical value be with an alpha of .025?
Report descriptive statistics, assumptions tests, effect sizes (partial eta) as well as tests of statistical significance.
Finding probability for the given values of the uniform density curve
Regression - What factors predict duration of dyspnea in elders with heart failure?
Suppose two residents participate in the program (each for 3 weeks= 21 days) and cart review inds a total of 20 medical erros made by the two residents combined. Rate = 20 errors in 21 days per 2 residents .95 error per day per 2 resdients or .4762..
Would the null hypothesis that the 2007 median household income was $50,000 be rejected at the 10% significance level in favor of the two-sided alternative? (Choose the correct answer)
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