# Question

A researcher desires to know whether the typing speed of a secretary (in words per minute) is related to the time (in hours) that it takes the secretary to learn to use a new word processing program. The data are shown.

If there is a significant relationship, predict the time it will take the average secretary who has a typing speed of 72 words per minute to learn the word processing program.

Do a complete regression analysis by performing the following steps.

a. Draw the scatter plot.

b. Compute the value of the correlation coefficient.

c. Test the significance of the correlation coefficient at α = 0.01, using Table I.

d. Determine the regression line equation.

e. Plot the regression line on the scatter plot.

f. Predict y’ for a specific value of x.

If there is a significant relationship, predict the time it will take the average secretary who has a typing speed of 72 words per minute to learn the word processing program.

Do a complete regression analysis by performing the following steps.

a. Draw the scatter plot.

b. Compute the value of the correlation coefficient.

c. Test the significance of the correlation coefficient at α = 0.01, using Table I.

d. Determine the regression line equation.

e. Plot the regression line on the scatter plot.

f. Predict y’ for a specific value of x.

## Answer to relevant Questions

A study was conducted with vegetarians to see whether the number of grams of protein each ate per day was related to diastolic blood pressure. The data are given here. If there is a significant relationship, predict the ...As part of the Mathematics Assessment, eighth-graders were asked about the frequency with which they used calculators while taking tests or quizzes. The results for national public schools were as follows: never, 28%; ...Three coins are tossed 72 times, and the number of heads is shown. At α = 0.05, test the null hypothesis that the coins are balanced and randomly tossed. Perform these steps. a. State the hypotheses and identify the ...Is the size of the population by age related to the state that it’s in? Use α = 0.05. (Population values are in thousands.) Perform the following steps. a. State the hypotheses and identify the claim. b. Find the critical ...A book publisher wishes to determine whether there is a difference in the type of book selected by males and females for recreational reading. A random sample provides the data given here. At α = 0.05, test the claim that ...Post your question

0