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A survey of the opinions of property owners about a street widening project was taken to determine Whether the resulting opinion was related to the distance of front footage. A randomly selected Sample of 100 property owners was contacted and the results are shown below. A survey of the opinions of property owners about a street widening project was taken to determine Whether the resulting opinion was related to the distance of front footage. A randomly selected Sample of 100 property owners was contacted and the results are shown below. If the computed chi-square is 8.5, what is your decision at the 10% level of significance? A) Reject H0; opinion and property front-footage are related. B) Accept H0; opinion and property front-footage are related. C) Reject H0; opinion and property front-footage are not related. D) Accept H0; opinion and property front-footage are not related. If the computed chi-square is 8.5, what is your decision at the 10% level of significance?


A) Reject H0; opinion and property front-footage are related.
B) Accept H0; opinion and property front-footage are related.
C) Reject H0; opinion and property front-footage are not related.
D) Accept H0; opinion and property front-footage are not related.

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A student asked a statistics professor if grades were marked "on the curve." The professor decided To give the student a project to determine if last year's statistics grades were normally distributed. The professor told the student that last year's mean mark was 70 with a standard deviation of 10 And to use the following results. A student asked a statistics professor if grades were marked on the curve. The professor decided To give the student a project to determine if last year's statistics grades were normally distributed. The professor told the student that last year's mean mark was 70 with a standard deviation of 10 And to use the following results. What is your decision if α = 0.05? A) The letter grades are evenly distributed. B) The letter grades are not evenly distributed. C) The letter grades are normally distributed. D) The letter grades are not normally distributed. E) The letter grades are unfairly distributed. A student asked a statistics professor if grades were marked on the curve. The professor decided To give the student a project to determine if last year's statistics grades were normally distributed. The professor told the student that last year's mean mark was 70 with a standard deviation of 10 And to use the following results. What is your decision if α = 0.05? A) The letter grades are evenly distributed. B) The letter grades are not evenly distributed. C) The letter grades are normally distributed. D) The letter grades are not normally distributed. E) The letter grades are unfairly distributed. What is your decision if α = 0.05?


A) The letter grades are evenly distributed.
B) The letter grades are not evenly distributed.
C) The letter grades are normally distributed.
D) The letter grades are not normally distributed.
E) The letter grades are unfairly distributed.

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i. In the goodness-of-fit test, the chi-square distribution is used to determine how well an observed Set of observations "fits" an "expected" set of observations. ii. The sum of the expected frequencies and the sum of the observed frequencies must be equal. iii. If the computed value of chi-square is less than the critical value, reject the null hypothesis at a Predetermined level of significance.


A) (i) , (ii) , and (iii) are all correct statements.
B) (i) and (ii) are correct statements but not (iii) .
C) (i) and (iii) are correct statements but not (ii) .
D) (ii) and (iii) are correct statements but not (i) .
E) (i) , (ii) , and (iii) are all false statements.

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Recently, students in a marketing research class were interested in the driving behaviour of Students. Specifically, the marketing students were interested if exceeding the speed limit was Related to gender. They collected the following responses from 100 randomly selected students: Recently, students in a marketing research class were interested in the driving behaviour of Students. Specifically, the marketing students were interested if exceeding the speed limit was Related to gender. They collected the following responses from 100 randomly selected students: Based on the analysis, what can be concluded? A) Gender and speeding are correlated. B) Gender and speeding are not related. C) Gender and speeding are related. D) The mean of gender equals the mean of speeding. E) No conclusion is possible. Based on the analysis, what can be concluded?


A) Gender and speeding are correlated.
B) Gender and speeding are not related.
C) Gender and speeding are related.
D) The mean of gender equals the mean of speeding.
E) No conclusion is possible.

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Which of the following are correct statements regarding the chi-square distribution?


A) Distribution is negatively skewed
B) Chi-square is based on two sets of degrees of freedom, one for the numerator and one for the denominator.
C) Its shape is based on the degrees of freedom.

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A student asked a statistics professor if grades were marked "on the curve." The professor decided To give the student a project to determine if last year's statistics grades were normally distributed. The professor told the student that last year's mean mark was 70 with a standard deviation of 10 And to use the following results. A student asked a statistics professor if grades were marked on the curve. The professor decided To give the student a project to determine if last year's statistics grades were normally distributed. The professor told the student that last year's mean mark was 70 with a standard deviation of 10 And to use the following results. What is the calculated value of chi-square? A) 29.76 B) 14.20 C) 14.88 D) 28.36 E) 12.59 What is the calculated value of chi-square?


A) 29.76
B) 14.20
C) 14.88
D) 28.36
E) 12.59

Correct Answer

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