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The average number of accidents at controlled intersections per year is 5.4. Is this average more for intersections with cameras installed? The 47 randomly observed intersections with cameras installed had an average of 5.9 accidents per year and the standard deviation was 1.08. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Ho: P H₁: > > < c. The test statistic t = 3.174 5.4 5.4 (please show your answer to 3 decimal places.)

The average number of accidents at controlled intersections per year is 5.4. Is this average more for intersections with cameras installed? The 47 randomly observed intersections with cameras installed had an average of 5.9 accidents per year and the standard deviation was 1.08. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Ho: P H₁: > > < c. The test statistic t = 3.174 5.4 5.4 (please show your answer to 3 decimal places.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Microsoft Word -... # The average number of accidents at controlled intersections per year is 5.4. Is this average more for intersections with cameras installed? The 47 randomly observed intersections with cameras installed had an average of 5.9 accidents per year and the standard deviation was 1.08. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Ho: V = H₁: > 5.4 c. The test statistic t = 3.174 (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? a f. Based on this, we should g. Thus, the final conclusion is that ... 80 F3 V 5.4 Select an answer the null hypothesis. O The data suggest that the populaton mean is significantly more than 5.4 at a = 0.01, so there is statistically significant evidence to conclude that the population mean number of accidents per year at intersections with cameras installed is more than 5.4 accidents. O The data suggest that the population mean is not significantly more than 5.4 at a = 0.01, so there is statistically insignificant evidence to conclude that the population mean number of accidents per year at intersections with cameras installed is more than 5.4 accidents. with cam ed is mo O The data suggest that the sample mean is not significantly more than 5.4 at a = 0.01, so there is statistically insignificant evidence to conclude that the sample mean number of accidents per year at intersections with cameras installed is more than 5.9 accidents. h. Interpret the p-value in the context of the study. 000 000 F4 O There is a 0.13407982 % chance that the population mean number of accidents per year at intersections with cameras installed is greater than 5.4. O There is a 0.13407982 % chance of a Type I error. O If the population mean number of accidents per year at intersections with cameras installed is 5.4 and if another 47 intersections with cameras installed are observed then there would be a 0.13407982% chance that the population mean number of accidents per year at intersections with cameras installed would be greater than 5.4. O If the population mean number of accidents per year at intersections with cameras installed is 5.4 and if another 47 intersections with cameras installed are observed then there would be a 0.13407982% chance that the sample mean for these 47 intersections with cameras installed would be greater than 5.0 F5 F6 AA F7 DII F8 8 F9
Transcribed Image Text:Microsoft Word -... # The average number of accidents at controlled intersections per year is 5.4. Is this average more for intersections with cameras installed? The 47 randomly observed intersections with cameras installed had an average of 5.9 accidents per year and the standard deviation was 1.08. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Ho: V = H₁: > 5.4 c. The test statistic t = 3.174 (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? a f. Based on this, we should g. Thus, the final conclusion is that ... 80 F3 V 5.4 Select an answer the null hypothesis. O The data suggest that the populaton mean is significantly more than 5.4 at a = 0.01, so there is statistically significant evidence to conclude that the population mean number of accidents per year at intersections with cameras installed is more than 5.4 accidents. O The data suggest that the population mean is not significantly more than 5.4 at a = 0.01, so there is statistically insignificant evidence to conclude that the population mean number of accidents per year at intersections with cameras installed is more than 5.4 accidents. with cam ed is mo O The data suggest that the sample mean is not significantly more than 5.4 at a = 0.01, so there is statistically insignificant evidence to conclude that the sample mean number of accidents per year at intersections with cameras installed is more than 5.9 accidents. h. Interpret the p-value in the context of the study. 000 000 F4 O There is a 0.13407982 % chance that the population mean number of accidents per year at intersections with cameras installed is greater than 5.4. O There is a 0.13407982 % chance of a Type I error. O If the population mean number of accidents per year at intersections with cameras installed is 5.4 and if another 47 intersections with cameras installed are observed then there would be a 0.13407982% chance that the population mean number of accidents per year at intersections with cameras installed would be greater than 5.4. O If the population mean number of accidents per year at intersections with cameras installed is 5.4 and if another 47 intersections with cameras installed are observed then there would be a 0.13407982% chance that the sample mean for these 47 intersections with cameras installed would be greater than 5.0 F5 F6 AA F7 DII F8 8 F9
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