Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Question: A 23-mile stretch of a two-lane highway east of Paso Robles, California, was once considered a "death trap" by residents of San Luis Obispo County. Formerly known as "Blood Alley," Highway 46 gained notoriety for the number of fatalities (29) and crashes over a 240- week period. More than two-thirds involved head-on collisions. The file titled Crashes contains the simulated number of fatal crashes during this time period.
a. Determine the average number of crashes in the 240 weeks.
b. Calculate the probability that at least 19 crashes would occur over the 240-week period if the average number of crashes per week was as calculated in part a.
c. Calculate the probability that at least 19 crashes would occur over a five-year period if the average number of crashes per week was as calculated in part a.
d. A coalition of state, local, and private organizations devised a coordinated and innovative approach to dramatically reduce deaths and injuries on this road. During the 16 months before and after completion of the project, fatal crashes were reduced to zero. Calculate the probability that there would be no fatal crashes if the mean number of fatal crashes was not changed by the coalition. Does it appear that the average number of fatal accidents has indeed decreased?
The details were even more disturbing: "Errors by air traffic controllers climbed from 746 in fiscal 1997 to 878 in fiscal 1998, an 18% increase." So, are the risks of a fatal airline crash or an air traffic control error something that should be ..
A study was conducted to determine the effects of individual bathers on the fecal and total coliform bacterial populations in water. The variables of interest were the time since the subject's last bath, the vigor of the subject's activity in the ..
A promotion campaign is being planned to encourage people to reduce heat in their houses at night. In order to measure the campaign's impact, we want to determine the proportion of people who reduce their heat at night.
A student wanted to construct a 95% confidence interval for the average age of students in her statistics class. She randomly selected 9 students. Their average age was 19.1 years with a standard deviation of 1.5 years. What is the best point esti..
consider a customer service facility that is staffed with 2 representatives. we assume that the amount of time a
Consider the problem of finding a shortest (forward) path from an origin node s to a destination node t of a graph with given arc lengths, subject to the additional constraint that the path passes through every node exactly once.
complete the following hypothesis test ho ? 52 ha ? lt 52 ? 0.01 using the data below.55 47 58 55 39
For the 13 obese young adults, the researchers reported a correlation of r = .50 between baseline and follow-up physical activity, with an associated p-value of .07. Give a practical interpretation of this correlation coefficient and p-value.
Find a 90% confidence interval for the population mean weight of all such turtles.
the weight of young adult females are normally distributed with a mean of 130 pounds and a standard deviation of 20
the lengths of pregnancies are normally distributed with a mean of 268 days and standard deviation of 15 days if 64
Complete row 3 of the table and find the mean for the random variable, "mu". Complete row 4 of the table and find both variance, and standard deviation
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd