# Question: A computer dating service typically asks for various pieces of

A computer dating service typically asks for various pieces of information such as height, weight, income, and so on. One such service requested the length of index fingers. The only plausible reason for this request is to act as a proxy on height. Women have often complained that men lie about their heights. If there is a strong relationship between heights and index fingers, the information can be used to “correct” false claims about heights. To test the relationship between the two variables researchers gathered the heights and lengths of index fingers (in centimeters) of 121 students.

a. Graph the relationship between the two variables.

b. Is there sufficient evidence to infer that height and length of index fingers are linearly related?

c. Predict with 95% confidence the height of someone whose index finger is 6.5 cm long. Is this prediction likely to be useful? Explain. (The authors would like to thank Howard Waner for supplying the problem and data.)

a. Graph the relationship between the two variables.

b. Is there sufficient evidence to infer that height and length of index fingers are linearly related?

c. Predict with 95% confidence the height of someone whose index finger is 6.5 cm long. Is this prediction likely to be useful? Explain. (The authors would like to thank Howard Waner for supplying the problem and data.)

**View Solution:**## Answer to relevant Questions

In addition to the data recorded for Exercises 12.31 and 13.217, we recorded the grade point average of the students who held down part-time jobs. Determine whether there is evidence of a linear relationship between the ...Pat Statsdud, a student ranking near the bottom of the statistics class, decided that a certain amount of studying could actually improve final grades. However, too much studying would not be warranted because Pat’s ...The administrator of a school board in a large county was analyzing the average mathematics test scores in the schools under her control. She noticed that there were dramatic differences in scores among the schools. In an ...What determines people’s opinion on the following question? Should the government reduce income differences between rich and poor (EQWLTH: 1 = Government should reduce differences; 2, 3, 4, 5, 6, 7 = No government ...Compute the residuals and predicted values for the regression analysis in Exercise.a. Does it appear that the error variable is not normally distributed?b. Is the variance of the error variable constant?c. Is ...Post your question