The average number of accidents at controlled intersections per year is 5.6. Is this average a differentnumber for intersections with cameras installed? The 67 randomly observed intersections with camerasinstalled had an average of 5.8 accidents per year and the standard deviation was 0.6. What can beconcluded at the a = 0.01 level of significance?a. For this study, we should use Select an answerb. The null and alternative hypotheses would be:Ho: ? v Select an answer vH1: ? vSelect an answer Vc. 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 ? vaf. Based on this, we should Select an answerg. Thus, the final conclusion is that ...the null hypothesis.The data suggest that the population mean is not significantly different from 5.6 at a = 0.01,so there is statistically insignificant evidence to conclude that the population mean number ofaccidents per year at intersections with cameras installed is different from 5.6 accidents.O The data suggest that the sample mean is not significantly different from 5.6 at a = 0.01, sothere is statistically insignificant evidence to conclude that the sample mean number ofaccidents per year at intersections with cameras installed is different from 5.8 accidents.O The data suggest that the populaton mean is significantly different from 5.6 at a = 0.01, sothere is statistically significant evidence to conclude that the population mean number ofaccidents per year at intersections with cameras installed is different from 5.6 accidents.h. Interpret the p-value in the context of the study.O If the population mean number of accidents per year at intersections with cameras installed is5.6 and if another 67 intersections with cameras installed are observed then there would be a0.81465979999999% chance that the population mean would either be less than 5 or greaterthan 5.8.O There is a 0.81465979999999% chance of a Type I error.O There is a 0.81465979999999% chance that the population mean number of accidents per yearat intersections with cameras installed is not equal to 5.6.O If the population mean number of accidents per year at intersections with cameras installed is5.6 and if another 67 intersections with cameras installed are observed then there would be a0.81465979999999% chance that the sample mean for these 67 intersections with camerasinstalled would either be less than 5 or greater than 5.8.i. Interpret the level of significance in the context of the study.O If the population mean number of accidents per year at intersections with cameras installed is5.6 and if another 67 intersections with cameras installed are observed then there would be a1% chance that we would end up falsely concluding that the population mean number ofaccidents per year at intersections with cameras installed is different from 5.6.O There is a 1% chance that you will get in a car accident, so please wear a seat belt.O If the population population mean number of accidents per year at intersections with camerasinstalled is different from 5.6 and if another 67 intersections with cameras installed areobsethen there would be a 1% chance that we would end up falsely concluding that thepopulation mean number of accidents per year at intersections with cameras installed is equalto 5.6.O There is a 1% chance that the population mean number of accidents per year at intersectionswith cameras installed is different from 5.6.

We have given that Sample size n =67 Sample mean =5.8 Sample standard deviation =0.6 NOTE:-…

Answered: The average number of accidents at…

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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A set of exam scores is normally distributed with a mean = 82 and standard deviation = 6.Use the Empirical Rule to complete the following sentences.68% of the scores are between and .95% of the scores are between and .99.7% of the scores are between and .
Need help with C, D and H please
Use the departure delay times and the arrival delay times to test the claim that there is a correlation between departure delay times and arrival delay times. Test for rank correlation with a 0.05 significance level. Click here to view the flight delay data. Click here to view the critical values of Spearman's rank correlation coefficient. Flight delay data .... Determine the null and alternative hypotheses for this test. Choose the correct answer below. O A. Hg: Ps =0 Departure Delay Arrival Departure Delay Arrival O B. Ho: Ps #0 H: Ps = 0 Departure Delay Arrival H: Ps #0 Delay Delay Delay - 36 -7 11 14 OC. Ho:r 0 H:r=0 O D. Ho: r =0 H:rg 40 -21 15 25 -33 10 -32 Determine the the correlation coefficient. - 5 32 13 4 12 16 -23 (Round to three decimal places as needed.) 3 14 -38 60 28 13 3 13 149 111 Determine the critical value(s) of the correlation coefficient, -38 -7 -35 - 3 -21 -23 23 - 2 -10 14 (Round to three decimal places as needed. Use a comma to separate answers as needed.)…
You were told that the mean daily cost of a hotel room in downtown St. Louis is $120. You will be needing to rent a hotel room there in the near future and you want to find the best rate. You randomly select a sample of 18 hotel rooms and find that the average cost is $121.33 with a standard deviation of $18.046. At the α = 0.05 significance level, determine if there is enough evidence to reject the claim. What is the decision for this hypothesis test? You were told that the mean daily cost of a hotel room in downtown St. Louis is $120. You will be needing to rent a hotel room there in the near future and you want to find the best rate. You randomly select a sample of 18 hotel rooms and find that the average cost is $121.33 with a standard deviation of $18.046. At the α = 0.05 significance level, determine if there is enough evidence to reject the claim. What is the decision for this hypothesis test? Reject the null because the test statistic is in the critical region and the…
According to the National Association of Home Builders, the average cost of building a home in the Northeast is $117.91 per square foot. A random sample of 38 new homes indicated that the mean cost was $123.87 and the standard deviation was $17. Can it be concluded that the mean cost differs from $117.91, using the 0.10 level of significance? A.) State the hypotheses and identify the claim with the correct hypothesis. H0: H1: B.) Find the critical value(s). C.) Compute the test value. z= D.) Make the decision. ________ the null hypothesis. E.) Summarize the results.
please answer d, e, f
The average salary for American college graduates is $44,300. You suspect that the average is different for graduates from your college. The 61 randomly selected graduates from your college had an average salary of $44,099 and a standard deviation of $4,460. What can be concluded at the a = 0.10 level of significance? a. For this study, we should useSelect an answer b. The null and alternative hypotheses would be: Họ: vSelect an answer H: ? vSelect an answer 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 va the null hypothesis. f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... O The data suggest that the population mean is not significantly different from 44,300 at a = 0.10, so there is statistically insignificant evidence to conclude that the population mean salary for graduates from your college is different from 44,300. The data suggest that…
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The mean number of eggs per person eaten in the United States is 242. Do college students eat more eggs than the average American? The 57 college students surveyed averaged 252 eggs per person and their standard deviation was 26.2. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: H₁: Select an answer Select an answer c. The test statistic ? ✓ d. The p-value = e. The p-value is ? ✓ a f. Based on this, we should g. Thus, the final conclusion is that ... (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) Select an answer the null hypothesis. O The data suggest that the sample mean is not significantly more than 242 at a = 0.01, so there is statistically insignificant evidence to conclude that the sample mean number of eggs consumed by college students per year is more than 252. The data suggest that the populaton mean is…
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Water usage is closely watched in many parts of Australia. Suppose that in a summer the average household usage in Hobart is 408 litres per day. A year later it examines records of a sample of 50 households and finds that there is a daily mean usage of 380 litres with a standard deviation of 25 litres. a.Do you think the average daily water usage has been changed in the second summer? Use the 5% level of significance level for hypothesis testing. b.Because of the draught situation in Australia, after the first summer, the price of water in Hobart was increased to encourage households to reduce their water consumption. How do you evaluate the effect of increasing water prices? Use the 5% level of significance level for hypothesis testing.

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