Question

In: Math

A number of minor automobile accidents occur at various high-risk intersections in York county despite the...

A number of minor automobile accidents occur at various high-risk intersections in York county despite the traffic lights. The traffic department claims that a modification in the type of light will reduce these accidents. The county commissioners have agreed to a proposed experiment. Eight intersections were chosen at random, and lights at those intersections were modified. The number of minor accidents during a six-months periods before and after the modifications were

Number of accidents

A

B

C

D

E

F

G

H

Before modification

5

7

6

4

8

9

8

10

After modification

3

7

7

0

4

6

8

2

At the .01 significance level, it is reasonable to conclude that the modifications reduced the number of traffic accidents?

Solutions

Expert Solution


milcah answered 1 year ago
Next > < Previous

Related Solutions

A number of minor automobile accidents occur at various high-risk intersections in Jackson despite traffic lights....
A number of minor automobile accidents occur at various high-risk intersections in Jackson despite traffic lights. The police department claims that a modification in the type of lights will reduce these accidents. The city commissioners have agreed to a proposed improvement experiment. Eight intersections were chosen at random and the lights at those intersections were modified. The number of minor accidents during a six months period before and after the modifications were: Number of Accidents A B C D E...
The average number of accidents at controlled intersections per year is 4.2. Is this average a...
The average number of accidents at controlled intersections per year is 4.2. Is this average a different number for intersections with cameras installed? The 43 randomly observed intersections with cameras installed had an average of 4.8 accidents per year and the standard deviation was 1.12. What can be concluded at the α α = 0.10 level of significance? For this study, we should use The null and alternative hypotheses would be: H 0 : H 0 : H 1 :...
The average number of accidents at controlled intersections per year is 4.3. Is this average less...
The average number of accidents at controlled intersections per year is 4.3. Is this average less for intersections with cameras installed? The 43 randomly observed intersections with cameras installed had an average of 3.7 accidents per year and the standard deviation was 1.47. What can be concluded at the αα = 0.01 level of significance? Can you please explain the steps of how to obtain the P value and test statistic using a graphing calculator?
The average number of accidents at controlled intersections per year is 4.1. Is this average more...
The average number of accidents at controlled intersections per year is 4.1. Is this average more for intersections with cameras installed? The 43 randomly observed intersections with cameras installed had an average of 4.3 accidents per year and the standard deviation was 0.63. What can be concluded at the αα = 0.05 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would...
The City Council has gathered data on the number of minor traffic accidents and the number...
The City Council has gathered data on the number of minor traffic accidents and the number of youth football games that occur in a town over a weekend X (Soccer Games) 20 30 10 12 15 25 24 Y (minor accdnt) . 6 9 4 5 7 8 9 Plot the data Develop the estimating equation that describes the data Predict the number of minor traffic accidents that will occur on a weekend during which 33 soccer games takes place
. A highway department executive claims that the number of fatal accidents which occur in her...
. A highway department executive claims that the number of fatal accidents which occur in her state does not vary from month to month. The results of a study of 170 fatal accidents were recorded. Is there enough evidence to reject the highway department executive's claim about the distribution of fatal accidents between each month? Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Fatal Accidents : 11 19 24 16 11 7 7 17 9...
A highway department executive claims that the number of fatal accidents which occur in her state...
A highway department executive claims that the number of fatal accidents which occur in her state does not vary from month to month. The results of a study of 120120 fatal accidents were recorded. Is there enough evidence to reject the highway department executive's claim about the distribution of fatal accidents between each month? Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Fatal Accidents 1010 1212 77 1313 66 1010 1313 66 1010 1111 88...
A highway department executive claims that the number of fatal accidents which occur in her state...
A highway department executive claims that the number of fatal accidents which occur in her state does not vary from month to month. The results of a study of 171 fatal accidents were recorded. Is there enough evidence to reject the highway department executive's claim about the distribution of fatal accidents between each month? Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Fatal Accidents 22 8 8 17 8 10 23 11 13 13 20...
a highway department executive claims that the number of fatal accidents which occur in her state...
a highway department executive claims that the number of fatal accidents which occur in her state does not vary from month to month. the results of a study of 180 fatal accidents were recorded. is there enough evidence to reject the highway department executives claim about the distribution of fatal accidents between each month? Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Fatal Accidents 11 13 14 9 18 14 11 11 16 22 16...
A highway department executive claims that the number of fatal accidents which occur in her state...
A highway department executive claims that the number of fatal accidents which occur in her state does not vary from month to month. The results of a study of 161161 fatal accidents were recorded. Is there enough evidence to reject the highway department executive's claim about the distribution of fatal accidents between each month? Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Fatal Accidents 16 11 19 11 10 13 13 10 13 16 18...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT