4662 Words19 Pages

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. The level of significance is the risk we assume of rejecting the null hypothesis when it is actually true.
4. Type II error is the probability or risk assumed by rejecting null hypothesis when it is actually true.
5. A test statistic is a value determined from sample information used to reject or not reject the null hypothesis.
6. The region or area of rejection defines the location of all those values that are so large or so small that the probability of their occurrence under a true null hypothesis is rather remote.
7. If the null hypothesis states that there is no difference between the mean income of males and the mean income of females, and the alternate hypothesis states that there is a difference in the mean income of males and females, then the test is one-tailed.
8. If the null hypothesis is µ > 200 and the alternate hypothesis states that µ < 200, then, a two-tail test is being conducted.
9. In not rejecting the null hypothesis, we are actually saying that our sample data does not allow us to reject the null hypothesis. Thus, the null hypothesis is true.
10. If we do not reject the null hypothesis based on sample evidence, we have proven beyond doubt that the null hypothesis is true.
11. The level of significance is selected after setting up a decision rule and sampling the population.
12. The first step in testing a hypothesis is to state the null and the alternate hypotheses.
13. The

Related

## Qnt 351 Steps to Testing Research Hypothesis

391 Words | 2 PagesThe alternative hypothesis is a statement that is accepted only if the data proves evidence is true. This typically represents the values of a population parameter in which the researcher wants to gather evidence to support the hypothesis (McClave, Benson, & Sincich, 2011). The next steps are to select the appropriate test statistic and level of significance. The z-test is typically used when testing a hypothesis of a proportion and a t-test is used when testing a hypothesis of a mean. The test statistic is used to determine whether the researcher should use the null or alternative hypothesis.

## Inro to Pc Programming Unit 5 Assignment 1 Homework

1059 Words | 5 PagesIf the condition is false, you need to execute a different set of statements. What structure will you use? I will use the “If” statement because it is a dual alternative decision structure. 3) If you need to a test the value of a variable and use that value to determine which statement or set of statements to execute, which structure would be the most straightforward to use? The case structure lets the value of a variable or an expression determine which path of execution the program will take.

## Mth/231 Hypothesis Testing Paper

1338 Words | 6 Pages1. A statistical hypothesis is either a statement about the value of a population parameter (e.g., mean, median, mode, variance, standard deviation, proportion, total), or a statement about the kind of probability distribution that a certain variable obeys.A statistical hypothesis test is a method of making decisions using data, whether from a controlled experiment or an observational study (not controlled). In statistics, a result is called statistically significant if it has been predicted as unlikely to have occurred by chance alone, according to a pre-determined threshold probability, the significance level. 2. What is a null hypothesis?

## Math 533 Project B

1730 Words | 7 PagesMath 533 Course Project: AJ DAVIS DEPARTMENT STORES Project Part B: Hypothesis Testing and Confidence Intervals Summary Report In order to calculate the probability of each situation hypothesis tests were administered on each scenario. In summary, hypothesis testing is used to check whether there is or is not likely to be a difference between one or more data sets. In statistics there is no such thing as 100% sure so uncertainty must be allowed. Instead the best thing we can do in statistics is to show things are false to make the best inferences. The following information below describes what was concluded from the hypothesis tests below.

## Goldfish Lab Report

1444 Words | 6 PagesThe third step is to test your hypothesis by experimenting and recording data to determine if the hypothesis solves the problem or not. The fourth step is to analyze data and draw a conclusion, yes, the hypothesis was correct, or no, the hypothesis was incorrect. A hypothesis is an educated guess or what you think will happen. When forming a hypothesis two hypotheses are made which are null hypothesis and a working hypothesis. The null hypothesis is a hypothesis that states that nothing will happen, no matter what happens to the independent variable, the dependent variable will not change.

## ACCT/400 Final Exam

1555 Words | 7 PagesFalse Question 27 of 50 1.0/ 1.0 Points The auditor begins with tests of internal control. A. True B. False Question 28 of 50 1.0/ 1.0 Points The integrity of management plays a key role in deciding whether or not to accept a client. A.

## Week 11 Laboratory Exercise

699 Words | 3 PagesWhat are you going to do with the outlier? Please provide a rationale for your decision. (0 marks as this question is part of data screening for the writing of the results in Task 10) Participant two’s score was changed to 256, which was one unit higher than the next most extreme score identified. Perform data screening. Was there a normal distribution?

## Statistics, Course Project Part B

2217 Words | 9 PagesAlternatively, we reject the null hypothesis, if the p value is less than the significance level Substituting the value we get t = 43.74-5014.6396/50 = -3.02 The p value corresponding to t = -3.02 and 49 d.f. is 0.002 which is smaller than the significance level. The value of the test statistic is in the critical region and hence it is significant. Therefore, we reject the null hypothesis at 5% level of significance. The p-value is 0.002 which is smaller than the significance level.

## Current Business Research Project

17369 Words | 70 PagesExplain. Suppose that you perform a significance test regarding a population mean and that the evidence does not warrant rejection of the null hypothesis. When formulating the conclusion to the test, why is the phrase fail to reject the null hypothesis more accurate than the phrase accept the null hypothesis? Why can the null hypothesis not be proved? Explain.

## Exploratory Analysis

4266 Words | 18 Pages1. Null Hypothesis (H0) – This refers to the values of a population that will be accepted providing there is not enough evidence to disprove its veracity. 2. Alternative (research) hypothesis (Ha) – This also refers to the values of a population and represents the hypothesis that we would accept when there is convincing evidence that the null hypothesis is

### Qnt 351 Steps to Testing Research Hypothesis

391 Words | 2 Pages### Inro to Pc Programming Unit 5 Assignment 1 Homework

1059 Words | 5 Pages### Mth/231 Hypothesis Testing Paper

1338 Words | 6 Pages### Math 533 Project B

1730 Words | 7 Pages### Goldfish Lab Report

1444 Words | 6 Pages### ACCT/400 Final Exam

1555 Words | 7 Pages### Week 11 Laboratory Exercise

699 Words | 3 Pages### Statistics, Course Project Part B

2217 Words | 9 Pages### Current Business Research Project

17369 Words | 70 Pages### Exploratory Analysis

4266 Words | 18 Pages