Suppose that as a market analyst you wished to test whether consumers have any preference among the five different flavours of new fruit juice you have instore. A simple random sample of 100 consumers provided the following data:LimeCherryFlavour Orange Grape StrawberryCount3228161410Which one of the following statements is correct?O A. H There is a preference among the five different flavours of new fruit juice.O B. Chi-square goodness of fit test is applicable.OC. Chi-square test of independence is applicable.O D. The test is two-sided.

Here we have to choose the correct option out of given option

Answered: Suppose that as a market analyst you…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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6
A town has to choose among three candidates for mayor: A, B, or C. We want to know whether the preference for mayor has no relation to the socio- economic class of the voters, classified as Rich or Poor. The opinions of a random sample of 500 citizens are shown in the table below. What is your conclusion? Use a level of significance of 0.05. Economic class of Preferred Candidate voter B 140 60 Poor Rich A 160 40 с 40 60
Using the same question from #3 A survey is done to find out the favorite movies of 500 children. The children are categorized into male and female, and a sample of 50 children is chosen. Answer the following question: If the number of female children is 300, what is the sample size of each stratum? a male sample: 40 and female sample: 10 b male sample; 25 and female sample: 25 c male sample: 30 and female sample: 20 d male sample: 20 and female sample: 30
Imagine a researcher asks a sample of five people to drive two types of cars and rate each of them on a scale of 1 to 25. The researcher wants to know: Is there is a difference in the ratings of the two types of cars. Below are the data collected: Type A: 20, 10, 11, 23, 7 Type B: 10, 11, 4, 12, 1 what type of T Test would be appropriate
Q. 2 Describe Sign test for one sample. one
3. Can SAT scores predict college performance? Let x be a variable that represents SAT score of a computer science major, and let y be a variable that represents a student’s GPA upon graduation. A random sample of n =15 computer science majors provided their SAT scores and GPAs: x 1232 1070 1086 1287 1130 1048 1121 1095 1135 1208 1333 1160 1186 1243 1261 y 3.52 2.91 2.4 3.47 3.47 2.37 2.4 2.24 3.02 3.32 3.59 2.54 3.19 3.71 3.58 The scatter diagram for the SAT score and GPA is given below: (a) Find the sample correlation coefficient r. Truncate to two decimal places. What does the value tell you about the data? (b) Find the equation of the least squares line . Truncate to four decimal places. What does the slope mean? (c) Find the value of the coefficient of determination . Truncate to two decimal places. What does this number mean? (d) What is the predicted GPA if a computer science major got a…
O a. the OLS estimate of r is biased due to sample selection. O b.the OLS estimate of r is unbiased. Oc the error u is homoskedastic. O d. the OLS estimator is BLUE.
I need the P vaule and test statisc also.
Last school year, the student body of a local university consisted of 35% freshmen, 24% sophomores, 26% juniors, and 15% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification. Freshmen 90 Sophomores 60 Juniors 90 Seniors 60 We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year. The calculated value for the test statistic equals a. 0.5444 b. 2.789 c. 10.989 d. 15.231
A random sample of 7 oak trees from two forests was gathered. The results are shown below. Height of Trees (feet) Forest A Forest B 70 92 78 82 84 66 83 76 78 72 88 79 77 85 Based on the samples, which statement best compares the height of the oak trees in each forest? O The oak trees in Forest A are generally taller and have less variabillity than the oak trees in Forest B. The oak trees in Forest A are generally shorter and have less variabillity than the oak trees in Forest B. O The oak trees in Forest A are generally taller and have more variabillity than the oak trees in Forest B. The oak trees in Forest A are generally shorter and have more variabillity than the oak trees in Forest B.
You conduct a study to determine whether men and women have different colour preferences when buying a new car. In a questionnaire, you ask respondents to indicate their sex (male/female) and which of four possible colours they would choose when buying a new car. You collect the following data: Male Female Total White 20 14 34 Blue 13 6 19 Red 10 21 31 Green 22 6 28 Total 65 47 112 You compute the test statistic and the result is 14.16 Test at the .01 level of significance whether this study has provided sufficient evidence that men and women have different colour preferences when buying a new car. (State your conclusion and explain how you arrived at that conclusion.)
The following table shows the systolic blood pressure of 5 certified public accountants before tax season and after tax season begins. Before 110 124 98 105 118 After 114 128 97 108 122 If you plan to test if there is a difference in their blood pressure, answer the following: Is this means or proportions? [ Select ] ["proportions", "means"] Is this one-sample, two-sample independent, or two sample matched-pairs(dependent)? [ Select ] ["two-sample independent", "two sample matched-pairs(dependent)", "one-sample"] Which distribution should you use? [ Select ] ["t", "z"] At the 5% significance level, what is the initial conclusion? [ Select ] ["reject Ho", "fail to reject Ho"] At the 1% significance level, what is the initial conclusion? [ Select ] ["reject Ho", "Fail to reject Ho"]

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