{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Written Assignment 9 - Gabriel A. Godart

# Written Assignment 9 - Gabriel A. Godart - Principles of...

This preview shows pages 1–7. Sign up to view the full content.

Principles of Statistics 2010-04-STA-201-009OL Written Assignment 9 Gabriel A. Godart Thomas Edison State College. Exercises Set 14.1 Exercise 14.2 Straight line Exercise 14.4 a. False. It slopes upward only if the slope is > 0 b. True. Exercise 14.6 a. y = 30 + 55x b. = = b0 30 and b1 55 c. d. e.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
f. g. Exercise 14.8 a. = = b0 64 and b1 32 b. c. d. e. f. g.
h. According to the graph, we can estimate that the ball will travel at about 18 ft/sec after 1.5 sec. i. y = 64-32.1.5 = 16 j. Exercise 14.10 a. b0 = 30 and b1 = 55 b. The y-intercept b0 = 30 gives the y-value at which the straight line y = 30+55x intersects the y-axis. The slope b1 = 55 indicates that the y-value increases by 55 units for every increase of x of one unit. c. The y-intercept b0 = 30 is the service charge incurred without any work done. The slope b1 = 55 represents the fact that the cost per hour is \$55; it is the amount the total cost increases for each additional hour worked. k. Exercise 14.14 a. b0 = -1 and b1 = 2 b. Slopes upward. l. c. m. n. Exercise 14.16 a. b0 = -8 and b1 = -4 b. Slopes downward c.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
d. e. f. Exercises Set 14.2 g. h. Exercise 14.34 a. It helps us visualize any apparent relationship between two quantitative variables of a population. b. The data points must appear to cluster about a line. i. Exercise 14.40 a. j.
b. k. l. c. According to the least squares criterion, Line B fits the set of data points better than Line A. This is because the sum of squared errors is smaller for Line B than for Line A. m. Exercise 14.52 a. = - / -( ) / b1 xy xy nx2 x 2 n and = ( - ) b0 1n y b1x b. c. d. Thus = - / - / b1 169993 2705552 98316 2702 9 = 15.8935 and = - . = . b0 195552 15 89270 140 189 e. The regression equation is = . + . y 140 189 15 8935x f.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
g. h. i. j. Price tends to increase as the size increases. k. Custom homes appreciate an estimated \$15,893.5 per square feet.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 15

Written Assignment 9 - Gabriel A. Godart - Principles of...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online