1. A random sample of size 15 is selected from a normal population. The population standard deviation is unknown. Assume the null hypothesis indicates a two-tailed test and the researcher decided to use the 0.10 significance level. For what values of t will the null hypothesis not be rejected?
For a chi-square test involving a contingency table, suppose the null hypothesis is rejected. We conclude that the two variables are __________. a) related b) curvilinear c) linear d) not related 4. A sales manager for an advertising agency believes that there is a relationship between the number of contacts that a salesperson makes and the amount of sales dollars earned. What is the dependent variable?
Review Questions - 2: MGMT 3101 (For Final Exam) Section I: (True or False) 1. Hypothesis testing is a procedure based on sample evidence and probability theory used to decide whether the hypothesis is a reasonable statement and should be not be rejected or is unreasonable and should be rejected. 2. An alternate hypothesis is a statement about a population parameter that is accepted when the null hypothesis is rejected. 3.
So, 2000 = 30000/Square root of sample size. Solving for the Square root of sample size, we get Square root of sample size = 30000/2000 = 15. Taking its square, the sample size is found as 225. Chapter 9 Exercise 1 No it is not a good defense. If you choose 40 random employees from the corporation, the standard error would equal 6/Square root of 40 = .95 days.
A very large majority of banana varieties are not really able to grow for international trade, according to the article, their skin is too thin, or their pulp is very bland. Big banana companies like Dole and Chiquita are working on developing a replacement variety of the Cavendish, which has become the mass-market banana of choice for farmers and distributors because it provides a lot of fruit. Although Cavendishes need a lot of caring to grow, they are the only variety that provides farmer with a large amount of palatable fruit that can endure overseas trips without ripening or bruising too easily. The Cavendish is rich in Vitamins B6 and C, it contains a lot of potassium, magnesium, and fiber in it. It is also not very expensive, that is almost 60 cents per pound.
TOPIC 8 Chi-Square goodness-of-fit test Problem 12.1 Use a chi-square goodness-of-fit to determine whether the observed frequencies are distributed the same as the expected frequencies (α = .05) Category | fo | fe | 1 | 53 | 68 | 2 | 37 | 42 | 3 | 32 | 33 | 4 | 28 | 22 | 5 | 18 | 10 | 6 | 15 | 8 | Step 1 Ho: The observed frequencies are distributed the same as the expected frequencies Ha: The observed frequencies are not distributed the same as the expected frequencies Step 2 df = k – m – 1 Step 3 α = 0.05 x 2 0.05, 5df = 11.0705 Step 4 Reject Ho if x 2 > 11.0705 Category | fo | fe | | 1 | 53 | 68 | | 2 | 37 | 42 | | 3 | 32 | 33 | | 4 | 28 | 22 | | 5 | 18 | 10 | | 6 | 15 | 8
Quiz 5 Question 1 2 out of 2 points | | | In a 0-1 integer programming problem involving a capital budgeting application (where xj = 1, if project j is selected, xj = 0, otherwise) the constraint x1 - x2 ≤ 0 implies that if project 2 is selected, project 1 can not be selected.Answer | | | | | Selected Answer: | False | Correct Answer: | False | | | | | Question 2 0 out of 2 points | | | Rounding non-integer solution values up to the nearest integer value will result in an infeasible solution to an integer linear programming problem. Answer | | | | | Selected Answer: | True | Correct Answer: | False | | | | | Question 3 2 out of 2 points | | | If we are solving a 0-1 integer programming problem with three decision variables, the constraint x1 + x2 + x3 ≤ 3 is a mutually exclusive constraint. Answer | | | | | Selected Answer: | False | Correct Answer: | False | | | | | Question 4 2 out of 2 points | | | In a problem involving capital budgeting applications, the 0-1 variables designate the acceptance or rejection of the different projects. Answer | | | | | Selected Answer: | True | Correct Answer: | True | | | | | Question 5 2 out of 2 points | | | A conditional constraint specifies the conditions under which variables are integers or real variables. Answer | | | | | Selected Answer: | False | Correct Answer: | False | | | | | Question 6 2 out of 2 points | | | If we are solving a 0-1 integer programming problem, the constraint x1 ≤ x2 is a conditional constraint.
Find and interpret βˆ1in the context of this problem. c. Find and interpret the coefficient of determination (r-squared). d. Find and interpret coefficient of correlation. e. Does the data provide significant evidence (= .05) that the number of calls can be used to predict the sales? Test the utility of this model using a two-tailed test.
(TCO 2) A decrease in supply and a decrease in demand will : 7. (TCO 2) You are the sales manager for a software company and have been informed that the price elasticity of demand for your most popular software is less than one. To increase total revenues, you should: 8. (TCO 2) The price elasticity of demand
When you want to test if the average score of an exam significantly differs from 7.3 (the average score of last year), an independent samples t-test is most appropriate. a. T *b. F 24.