a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? v?v H1: ?? c. The test statistic ? v = (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 Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest that the sample mean is not significantly less than 6 at a = 0.05, so there is statistically insignificant evidence to conclude that the sample mean number of accidents per year at intersections with cameras installed is less than 5.6 accidents. OThe data suggest that the population mean is not significantly less than 6 at a = 0.05, so there is statistically insignificant evidence to conclude that the population mean number of accidents per year at intersections with cameras installed is less than 6 accidents. OThe data suggest that the populaton mean is significantly less than 6 at a = 0.05, so there is statistically significant evidence to conclude that the population mean number of accidents per year at intersections with cameras installed is less than 6 accidents.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Question
The average number of accidents at controlled intersections per year is 6. Is this average less for intersections
with cameras installed? The 45 randomly observed intersections with cameras installed had an average of 5.6
accidents per year and the standard deviation was 1.06. What can be concluded at the a
0.05 level of
significance?
a. For this study, we should use Select an answer
b. The null and alternative hypotheses would be:
Ho: ? ?v
H1: ? ?v
c. The test statistic ? =
(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 Select an answer v the null hypothesis.
g. Thus, the final conclusion is that
OThe data suggest that the sample mean is not significantly less than 6 at a = 0.05, so there is
statistically insignificant evidence to conclude that the sample mean number of accidents per year at
intersections with cameras installed is less than 5.6 accidents.
O The data suggest that the population mean is not significantly less than 6 at a = 0.05, so there is
statistically insignificant evidence to conclude that the population mean number of accidents per
year at intersections with cameras installed is less than 6 accidents.
O The data suggest that the populaton mean is significantly less than 6 at a = 0.05, so there is
statistically significant evidence to conclude that the population mean number of accidents per year
at intersections with cameras installed is less than 6 accidents.
h. Interpret the p-value in the context of the study.
OIf the population mean number of accidents per year at intersections with cameras installed is 6 and
if another 45 intersections with cameras installed are observed then there would be a 0.7504507%
mp?action=skip&to=1
chance that the sample mean for these 45 intersections with cameras installed would be less than
MacBook Pro
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DD
F4
F5
F6
F7
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F9
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F12
24
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7
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L
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Transcribed Image Text:The average number of accidents at controlled intersections per year is 6. Is this average less for intersections with cameras installed? The 45 randomly observed intersections with cameras installed had an average of 5.6 accidents per year and the standard deviation was 1.06. What can be concluded at the a 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? ?v H1: ? ?v c. The test statistic ? = (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 Select an answer v the null hypothesis. g. Thus, the final conclusion is that OThe data suggest that the sample mean is not significantly less than 6 at a = 0.05, so there is statistically insignificant evidence to conclude that the sample mean number of accidents per year at intersections with cameras installed is less than 5.6 accidents. O The data suggest that the population mean is not significantly less than 6 at a = 0.05, so there is statistically insignificant evidence to conclude that the population mean number of accidents per year at intersections with cameras installed is less than 6 accidents. O The data suggest that the populaton mean is significantly less than 6 at a = 0.05, so there is statistically significant evidence to conclude that the population mean number of accidents per year at intersections with cameras installed is less than 6 accidents. h. Interpret the p-value in the context of the study. OIf the population mean number of accidents per year at intersections with cameras installed is 6 and if another 45 intersections with cameras installed are observed then there would be a 0.7504507% mp?action=skip&to=1 chance that the sample mean for these 45 intersections with cameras installed would be less than MacBook Pro DI DD F4 F5 F6 F7 F8 F9 F11 F12 24 & 7 8. R Y 11 G. H J L くo ト
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