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A student wanted to construct a 95% confidence interval for the mean age of students in her statistics class. She randomly selected 9 students. Their mean age was 19.1 years, with a sample standard deviation of 1.5 years. What is the 95% confidence interval for the population mean? What is the sample mean? Calculate the standard error? Find the t-value corresponding to a sample size of 9. (Hint: Either use a t-table or Tools -> Statistical Tables in Gretl. The d.f. = 8 and the right-tail probability is 0.025.) Construct the 95% confidence interval for the mean age of the students.
a set of 10 cards consists of 5 red cards and 5 black cards. the cards are shuffled thoroughly and i choose one at
Suppose that Y has a continuous distribution with pdf f2, let Z=X+Y. Show that Z has a continuous distribution and find its pdf.
in a study of the relationship between pet ownership and physical activity in older adults 594 subjects reported that
No, there is not sufficient information to reject the hypothesis that the proportion of cats and the proportion of dogs that sleep more than 10 hours per day are the same because the test value -0.65 is inside the acceptance region (-1.96,1.96).
Give an example representing a discrete probability distribution and a continuous probability distribution. Explain why your choice is discrete and continuous.
Developing a linear programming problem using Commuter Bus scheduling to minimize the total cost.
1. the labor relations manager of a large corporation wished to study the absenteeism among workers at the companys
The mean annual salaries paid to male and female employees of the company were EURO 32.000,- and 24.000,- respectively. Determine the percentage of males and females employed by the company.
It will take 30 minutes regardless of the traffic conditions. Lynn's utility for travel time is: U(15 minutes) = 0.9, U(30 minutes) = 0.7, and U(40 minutes) = 0.2. Which route will minimize Lynn's expected travel time?
discuss a decision familiar to you that can be analyzed by using a decision tree.please answer in at least 3 sentences
Information about accessing the Blackboard Grading Rubric for this assignment is provided below.
Many vehicles used in space travel are constructed with redundant systems to protect the flight crew and their equipment. Find the probability that this shuttle component functions successfully if n = 2.
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