The U. S. Department of Transportation wants to see if there is a relationship between motor vehicle fatality rate (units=fatalities per 1000 licenses) and the percentage of licensed drivers over 21 (units -10%). A regression analysis on 13 cities revealed Exi - 110.50, 2x4-939.47, Eyi = 31.20, 2y2 = 95.96, and Exiyi = 263.06. What is the interpretation of B1?

a. For an increase of 0.001 fatalities/license in the motor vehicle fatality rate, the average percentage of licensed drivers over 21 decreases by 0.9727%.
b. For an increase of 10% in percentage of licensed drivers over 21, the average motor vehicle fatality rate decreases by 0.1015 fatalities/license.
c. For an increase of 10% in percentage of licensed drivers over 21, the average motor vehicle fatality rate decreases by 0.0097 fatalities/license.
d. For an increase of 0.001 fatalities/license in the motor vehicle fatality rate, the average percentage of licensed drivers over 21 decreases by 9.7273%.
e. None of the answers is correct

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

In tossing one coin 10 times, what are your chances for tossing a head? a tail? 2. in tossing one coin 100 times, what are your chances for tossing a head? a tail? 3. in tossing one coin 200 times, what are your chances for tossing a head? a tail? deviation = ((absolute value of the difference between expected heads and observed heads) + (absolute value of the difference between expected tails and observed tails)) divided by total number of tosses. this value should always be positive. 4. what is the deviation for 10 tosses? 5. what is the deviation for the 100 tosses? 6. what is the deviation for 200 tosses? 7. how does increasing the total number of coin tosses from 10 to 100 affect the deviation? 8. how does increasing the total number of tosses from 100 to 200 affect the deviation? 9. what two important probability principles were established in this exercise? 10. the percent of occurrence is the obtained results divided by the total tosses and multiplied by 100%. toss the coins 100 times and record your results. calculate the percent occurrence for each combination. percent head-head occurrence: percent tail-tail occurrence: percent head-tail occurrence:

Consider the following equation -167 + 37 = 49 - 21p select the equation that has the same solution as the given equation. o a. p - 5 + ip = 7 - p ob. +55 + 12p = 5p + 16 c. 2 + 1.25p = -3.75p + 10 d. -14 + 6p = -9 - 6p reset next