Random samples of 49 first-year students and 48 second-year students at the U of A were asked to state their car preference (American, European, and Japanese). The resulting frequencies are shown in the following table. Is there enough evidence to conclude a difference in car preference between first-years and second-years?   American European Japanese 1st 16 10 23 2nd 11 22 15 (a) In performing this statistical test, state the hypotheses.  Ho: the distribution of preference is the same for first-years and second-years vs. Ha: the distribution of preference is not the same for first-years and second-years   Ho: the proportion of first-years is the same for each car preference vs. Ha: the proportion of first-years is not the same for each car preference   Ho: the proportion of second-years is the same for each car preference vs. Ha: the proportion of second-years is not the same for each car preference    Ho: the distribution of student year is not the same for each car preference vs. Ha: the distribution of student year is the same for each car preference    Ho: the distribution of preference is not the same for first-years and second-years vs. Ha: the distribution of preference is the same for first-years and second-years (b) What is the expected frequencies of each cell?  Fill out the table. (Round your answers to 2 decimal places, if needed.)   American European Japanese 1st 13.64     2nd     18.8  (c) What is the test statistic value for this hypothesis test? (Round your answers to 2 decimal places, if needed.)TS = (d) The test statistic follows a chi-square distribution with df = 95 t-distribution with df = 2 chi-square distribution with df = 6 chi-square distribution with df = 2 t-distribution with df = 6 (e) Using the statistical table, the p-value is 0.05 < p-value < 0.10 0 < p-value < 0.005 0.01 < p-value < 0.025 0.025 < p-value < 0.05 0.005 < p-value < 0.01 p-value > 0.10 (f) Based on the p-value, those conducting the test should ____  the null hypothesis at the significance level of 0.05. reject  fail to reject (g) What is the appropriate conclusion?  There is sufficient evidence to conclude the proportion of first-years is not the same for each car preference.    There is sufficient evidence to conclude there is no difference in first-years and second-years for car preference.    There is insufficient evidence to conclude there is a difference in first-years and second-years for car preference.    There is sufficient evidence to conclude there is a difference in first-years and second-years for car preference.    There is insufficient evidence to conclude the proportion of first-years is not the same for each car preference.   *Please note this is all part of one question, i've tried this multiple times but I am confused. Please help*

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 58E: What is meant by the sample space of an experiment?
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Random samples of 49 first-year students and 48 second-year students at the U of A were asked to state their car preference (American, European, and Japanese). The resulting frequencies are shown in the following table. Is there enough evidence to conclude a difference in car preference between first-years and second-years?

  American European Japanese
1st 16 10 23
2nd 11 22 15

(a) In performing this statistical test, state the hypotheses.

 Ho: the distribution of preference is the same for first-years and second-years vs. Ha: the distribution of preference is not the same for first-years and second-years
 
Ho: the proportion of first-years is the same for each car preference vs. Ha: the proportion of first-years is not the same for each car preference
 
Ho: the proportion of second-years is the same for each car preference
vs. Ha: the proportion of second-years is not the same for each car preference
 
 Ho: the distribution of student year is not the same for each car preference vs. Ha: the distribution of student year is the same for each car preference
 
 Ho: the distribution of preference is not the same for first-years and second-years vs. Ha: the distribution of preference is the same for first-years and second-years

(b) What is the expected frequencies of each cell?  Fill out the table. (Round your answers to 2 decimal places, if needed.)

  American European Japanese
1st 13.64    
2nd     18.8 

(c) What is the test statistic value for this hypothesis test? (Round your answers to 2 decimal places, if needed.)
TS =


(d) The test statistic follows a

  • chi-square distribution with df = 95
  • t-distribution with df = 2
  • chi-square distribution with df = 6
  • chi-square distribution with df = 2
  • t-distribution with df = 6

(e) Using the statistical table, the p-value is

  • 0.05 < p-value < 0.10
  • 0 < p-value < 0.005
  • 0.01 < p-value < 0.025
  • 0.025 < p-value < 0.05
  • 0.005 < p-value < 0.01
  • p-value > 0.10

(f) Based on the p-value, those conducting the test should ____  the null hypothesis at the significance level of 0.05.

reject 

fail to reject

(g) What is the appropriate conclusion?

 There is sufficient evidence to conclude the proportion of first-years is not the same for each car preference.
 
 There is sufficient evidence to conclude there is no difference in first-years and second-years for car preference.
 
 There is insufficient evidence to conclude there is a difference in first-years and second-years for car preference.
 
 There is sufficient evidence to conclude there is a difference in first-years and second-years for car preference.
 
 There is insufficient evidence to conclude the proportion of first-years is not the same for each car preference.
 
*Please note this is all part of one question, i've tried this multiple times but I am confused. Please help*

 

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