Differences between the clocked speeds of randomly selected motorists, categoriz

Question

Differences between the clocked speeds of randomly selected motorists, categorized as either youthful, mature, or elderly (on the basis of visual appearance), should be analyzed with a

Question options:

one-factor F.

two-factor F.

one-variable chi-square.                             

two-variable chi-square.

Differences between the clocked speeds of randomly selected motorists who are cross-classified, in equal numbers, on the basis of estimated age (youthful or mature) and number of passengers (none or at least one) should be analyzed with a

Question options:

one-factor F.

two-factor F.

one-variable chi-square.

two-variable chi-square.

An instructor wishes to determine whether daytime students of introductory statistics have higher mean exam scores than their nighttime counterparts. The appropriate statistical test is a

Question options:

t for two independent samples.

t for two related samples.

one-factor F.

one-variable chi-square.

Attempting to establish whether Shakespeare could have written an unsigned manuscript, a literary investigator compares the mean sentence length from the unsigned manuscript (viewed as a sample) with the mean sentence length for all of Shakespeare's known manuscripts (viewed as a population). The appropriate statistical test is a

Question options:

t for one sample.

t for correlation coefficient.

one-variable chi-square.

none of the above

one-factor F.

two-factor F.

one-variable chi-square.                             

two-variable chi-square.

Explanation / Answer

15. For the purpose, large samples are needed to be used, Thus neither of t test are appropraite. One-variable Chi-sqaure test in this sscenaarion, does not makes sense as there is no predifined probbailities. Ans: None of the above.

14. The group of students in day tim efor statistics introductory class and their night time counterparts are two indepeendent groups. This account sfor two-sample t test.

13. The given data is bivariate one (cross tabulated data with age and number of passeners). Two-varible Chi-square.

1. Two or more variables (youthful , mature, wlderly) are compared using 1 factor F (One-wayANOVA).

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