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A random sample of 49 statistics examinations was taken. The average score, in the sample, was 84 with a sample standard deviation of 3.5. The 95% confidence interval for the average examination score of the population of the examinations is?
Blood pressure measurements on adult males 30-39 years of age were obtained in a survey of a representative sample of Twin Cities households. To compare the frequency of hypertension in the white and non-white population surveyed, the most appropr..
Given the following number of hours between breakdowns for 4 machines, are the machines significantly different? If so, how are they different? Which machine is the best? Which machine is the worst?
A researcher is using a chi-square test to determine whether there are any preferences among four brands of cola. With alpha = .05 and a sample of n = 30, what is the boundary for the critical region for the hypothesis test.
Find out the slope, b, and the intercept, a, for the least-squares line. Write the equation of the least squares line.
You read in a book about bridge that the probability that each of the four players is dealt exactly one ace is about 0.11. This means that in every 100 bridge deals each player has one ace exactly 11 times.
A multiple choice test with 50 questions is given. Each question has four choices. What is the student's probability of passing if passing is at least 60% correct?
You have been given a report that presents two regression models with different numbers of independent variables. You do not have the data so you cannot re computed regression models. Nevertheless, you have been asked to find out which model is b..
Find the probability that a man and woman are watching the schow at the same time. (This question confused me because it sounds like the statement I just wrote before this one)
A contractor is considering a sale that promises a profit of $32,000 with a probability of 0.7 or a loss (due to bad weather, strikes, and such) of $9000 with a probability of 0.3. What is the expected profit?
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
no children which is equal to value obtained by census. Give z statistic (rounded to two decimal places) and P-value. What do you conclude? (Use = 0.10.).
According to the U.S National Center for Health Statistics, the mean height for adult American males is mu = 65.5 inches. Assume the heights are normally distributed with standard deviation of sigma = 3.2.
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