Share
Explore BrainMass

Chi-Squared Test

Chi Square and ANOVA

These hitter data were collected on 6-23-2004 and represent the top 50 hitters in Major League Baseball on that date. Perform the following analyses on the data, interpret your findings and summarize what each analysis means. 1. Chi square analysis - Do th

Statistics

NEED TO USE ATTACHED SPREADSHEET, ALL CALCULATIONS IN EXCEL I need to determine whether the distribution of 100 scores in normally distributed. (see attached spreadsheet and please use template for answers) Perform a chi-square goodness-of-fit test. Report and interpret the computed p-value. What can you conclude about norm

Chi-Square

In a test of the independence of two variables, one the variables has two possible categories and the other has three possible categories. What will be the critical value of chi-square if the test is to be carried out at the 0.025 level? At the 0.05 level?

Age and job pressure analysis

2. A study regarding the relationship between age and the amount of pressure sales personnel feel in relation to their jobs revealed the following sample information. Questions are asked of sales people and the numbers of people that are in each group is shown in the table below. Is there a relationship between job pressure a

Analysis of data using Chi Square and ANOVA tests

2. A study regarding the relationship between age and the amount of pressure sales personnel feel in relation to their jobs revealed the following sample information. Questions are asked of sales people and the numbers of people that are in each group is shown in the table below. Is there a relationship between job pressure and

Chi square test for distribution of birth days

Are birthdays "even distributed" throughout the year, or are they more common during some parts of the year than others? Owners of a children's toy store chain in the Northwest asked just this question. Some data collected by the chain are summarized in Table 1 below. The data were obtained from a random sample of 180 people

Variables and Level of Measurement

Variables and Level of Measurement Length: One sentence per variable Identify the dependent and independent variables used in this paper, and their level of measurement (attribute or numeric). Methodology (using Chi-Square) Determine the appropriate statistical tool to test the hypothesis. Use Doane's 4-step hypothesis You

Test for Independence with Contingency Tables

A=0.05 level has been specified. df=(r-1)(k-1) r=# of rows in the contingency table k=# of colums in the contingency table In testing the independence of two variables, described in the contingency table, determine the critical value of the chi-square

Chi square test for number of break down

A company operates four machines during three shifts each day. From production records, the data in the table below were collected. At the .05 level of significance test to determine if the number of breakdowns is independent of the shift. Machine Shift A B C D 1 41 20 12 16 2 31 11 9 14 3 15 17 16 10 A. The number

Chi square test

Compute a chi-square test for goodness of fit for each of the following, using the .05 level for each. In each problem, the expected distribution is equal frequencies in each category. 1. 5 10 5 2. 10 15 10 3. 10 20 10 4. 5 15 5

Statistics in Psychological Scenarios

Does lecithin enhance memory? To test this idea, nine pairs of people matched in terms of age, sex, IQ and neurological status are given capsules containing either lecithin or a placebo at meals for a week. All are scored on a recent memory talk. A higher score indicates better task performance. pair lecithin Placebo 1

Chi Squared Test : Lotto Combinations

I need a full solution of the attached problem. Added to the problem description should be this information: In a 6/53 lotto each participant fills in a combination of 6 numbers out of a set of 53 possible numbers. keywords: chi-squared, lottery

Hypothesis Test Chi Square Test

Can people really identify their favorite brand of cola? Volunteers tasted Coca-Cola Classic, Pepsi, Diet Coke, and Diet Pepsi, with the results shown below. Use α = .05 Research question: Is the correctness of the prediction different for the two types of cola drinkers? Correct? Regular Coke Diet Coke Row Total

Hypothesis Test Chi Square Test

A student team examined parked cars in four different suburban shopping malls. One hundred vehicles were examined in each location. Use α = 0.05 Research question: Does vehicle type vary by mall location? Vehicle Type Somerset Oakland Great Lakes Jamestown Total Car 44 49 36

Chi square test .

The owner of a car dealership wants to determine whether there is a relation between the income level and the type of vehicle purchased in their dealership. He randomly sampled 500 car buyers and obtained the following data: Key: a) Income Level b) SUV/Minivan c) Midsize d) Compact a)up to $30K/yr b) 13 c) 7

Chi square test ..

15.22) A student team examined parked cars in four different suburban shopping malls. One hundred vehicles were examined in each location. At α = .05, does vehicle type vary by mall location? [TABLE] Please see the attached file for the fully formatted problems.

Chi Square Statistic Test

A social scientist sampled 140 people and classified them according to income level and whether or not they played a state lottery in the last month. The sample information is reported below. Is it reasonable to conclude that playing the lottery is related to income level? Use the .05 significance level Income Low Mid

Chi-squared Test and Goodness of Fit

In a classical experiment, Gregor Mendel observed the shape and color of peas that resulted certain crossbreedings. A sample of 556 peas was studied with the result that 315 produced round yellow, 108 produced round green, 101 produced wrinkled yellow, and 32 produced wrinkled green. According to Mendelian theory, the frequencie

Applied Statistics in Business and Economics ..

Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major. Use á = .01 RQ: Is the degree of certainty independent of credits earned? Fill in the Green cells in the attached worksheet. Credits Earned

Nonparametric Testing: Goodness of Fit and Chi Square Test

Simulation: See attached handout for the data. RQ: Are the proportion of M&M Peanut Chocolate Candies meet the corporate population proportion? Conduct a hypothesis test with a 95% confidence level. 1. State the hypothesis 2. State the decision rule 3. Calculate the test statistic (X² is on the handout) 4. Make a

Chi-Square

Recognize a contingency table (cross-tabulation of frequencies). Find degrees of freedom and use the chi-square table of critical values. Perform a chi-square test for independence on a contingency table. Perform a goodness-of-fit (GOF) test for a uniform distribution. Explain the GOF test for a Poisson distribution. Use co

Hypothesis testing - Chi Square.

15.3 Students applying for admission to an MBA program must submit scores from the GMAT test, which includes a verbal and a quantitative component. Shown here are raw scores for 100 randomly chosen MBA applicants at a Midwestern, public, AACSB-accredited business school. Research question: At α = .005, is the quantitative

Multiple choice questions from chi square test

1)The values in a chi-square distribution are always greater than 0 and A. are normally distributed. B. less than 1. C. can be quite large. D. are negatively skewed. ----------------------------------------------------------------- 2)In a 3 x 4 contingency table, there are A. four levels of each variable. B. two le

Chi square test and independence of two variables

In testing the independence of two variables described in a contingency table, determine the critical value of chi-square if the test is to be conducted at the a. x = 0.025 level and df = 5 b. x = 0.05 level and df = 8 c. x = 0.01 level and df = 6 d. x = 0.10 level and df = 4

Chi square test for goodness of fit .

A distributor of personal computers has five locations in the city of Orlando. The sales in units for the first quarter of the year were as follows. At the (0.01) significance level, do the records suggests that sales are uniformly distributed among the five locations? And is the null hypothesis rejected or not, and why?

Chi square test for goodness of fit

The personal manager of a firm is concerned about absenteeism. She decides to sample the records to determine if absenteeism is distributed evenly through the six-day work week. The null hypothesis to be tested is: Absenteeism is distributed evenly throughout the week. The 0.01 level is to be used. The sample results are: (Chi-S

Chi square test for association

In a study similar to one conducted by Fallon and Rezin (1985), a psychologist prepared a set of silhouettes showing different females body shapes ranging from somewhat thin to somewhat heavy and asked a group of women to indicate which body figure they thought men would consider the most attractive. Then a group of men were sh

Chi-Square test for association

Apparently there is a huge amount of misunderstanding concerning how the process of visual perception works. Specifically, many people believe (incorrectly) that at least part of looking at things involves energy going out of the eyes rather than energy coming into the eyes. This misunderstanding seems to be more common among

Chi Square Tests

I am having trouble completing this problem. I know what it is asking for but calculating it has me completely stuck. Please help!!!! Exam scores of 40 students in a statistics class are shown. (a) Estimate the mean and standard deviation from the sample. (b) Assuming that the data are from a normal distribution, define bin

Chi Square Test: Exam Mark Case Study

Prof. Green's multiple-choice exam had 50 questions with the distribution of correct answers shown below. Research question: At p<= .05, can you reject the hypothesis that Green's exam answers came from a uniform population Correct Answer Frequency A 8 B 8 C 9 D 11 E 14 Total 50