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!
"N-Year" design magnitudes. A system (e.g., a dam or a dike) is said to be designed for the N-year flood if it has a capacity which will be exceeded only by a flood equal to or greater than the N-year flood. The magnitude of the N-year flood is that which is exceeded with probability 1/N in any given year. Assume that successive annual floods are independent.
(a) What is the probability that exactly one flood equal to or in excess of the "50-year flood" will occur in a 50-year period?
(b) What is the probability that exactly three floods will equal or exceed this 50-year flood in 50 years? (c) What is the probability one or more floods will equal or exceed the 50-year flood in 50 years?
(d) If an agency designs each of 20 independent systems-i.e., systems at widely scattered locations-for its particular 500-year flood, what is the distribution of the number of systems which will fail at least once within the first 50 years after their construction? Assume that
(e) In 1958 the 50-year flood was estimated to be a particular size. In the next 10 years, two floods were observed in excess of that size. If the original estimate was correct, what is the probability of such an observation? Such a rare event may be so unlikely that the engineer prefers to believe (i.e., act as if) his original estimate was wrong. In Chaps. 4 to 6 we shall see that such calculations are an important part of decision making.
Use confidence interval to determine the estimated margin of error, Then determine the sample mean.
an average american family spends 927 dollars on christmas gifts with standard deviation of 200.what is the probability
to study the birth weight of infants whose mothers smoke a physician records the weights of 100 newborns whose mothers
Is this sample sufficient to conclude that the eye spots have a significant influence on the birds behavior? Use a two tail test with alpha =.05. Compute the estimated Cohen's d to measure the size of the treatment.
No more than 36% of the monthly gross income. what is the maximum monthly mortgage loan payment for which shawn can be approved?
For these data, the mean was 103 loaves sold per day, with a standard deviation of 9 loaves. Do these statistics suggest that Clarksburg Bakery should expect to sell between 94 and 112 loaves on about 68% of the days? Explain.
Find the sample size needed to construct a 99% confidence z-interval estimate of the mean. It is reasonable to estimate that the population standard deviation.
let x be a random variable that represents the monthly electric bills in a certain city. data shows that x is
What percentage of the cars driven by students at your school are silver? Answer this question by collecting data and giving a confidence interval.
With a standard deviation of 1.7 grams. Assuming the distribution of weights is normally distributed, 4% of whooping crane eggs weigh less than how many grams?
Subtract the women's mean weight from their mean ideal weight to find the mean desired weight change.
Develop a probability for the number of students in the sample who watch soap operas.
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