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!
Biology and Environmental Science
The water quality in many lakes and rivers is routinely monitored by tracking the turbidity, a measure of the total amount of suspended solids in the water. High turbidity measured in nephelometric turbidity units, or NTUs, suggests murky water. Heavy rains tend to raise river levels and increase turbidity. A sample of weekly rainfall total (x, measured in inches) and turbidity (y, in NTUs) was obtained for the Wide Waters site at Owasco Lake in New York. The data are given in the following table.
a. Find the estimated regression line.
b. Conduct a test of H0: β1 = 0 versus Ha: β1 ≠ 0 with a significance level of 0.05
c. Find an estimate of the expected turbidity if 0.55 inch of rain has fallen within the past week.
d. What proportion of the observed variation in turbidity is explained by this regression model? How do you think this model could be improved?
We suppose that customers arrive at a bank counter according to a Poisson process with rate λ = 10 per hour. Let N(t)be the number of customers in the interval [0,t].
A poll found that 329 out of 763 adults said they would travel to outer space in their lifetime, given the chance. Estimate the true proportion of adults who would like to travel to outer space with 92% confidence.
In a class of 40, 16 driver a car made outside the United States. What is the confidence interval for the total population of students at the 95% level?
Intersection of two mutually exclusive events: can be any value between 0 to 1, must always be equal to 1.
With more then a million teachers set to retire we are seeing a record number of turnovers in the teaching profession.
(a) What proportion of time is the system shut down? (b) What is the (limiting) averaging number of components that are being repaired?
In each situation below, calculate the standardized score (or z-score) for the value x:- Mean μ = 65, standard deviation σ = 4, value x = 70.
In all, 53 say "good." Does the poll give reason to conclude that more than half of all seniors think their job prospects are good? The hypotheses for a test to answer this question are?
A remote control unit has 40 components in series. The reliability of each component is 0.9994. What is the reliability of the remote control unit? If a redesign has 25 components in series, what is the reliability of the unit?
suppose it is known that the time spent by customers in a fast-food restaurant is a normally distributed variable with
The grades from a statistics class for the ?rst test are given by
Would it be unlikely for them to find fewer than 65 children with the gene? Calculate the z-score and base your response upon the z-score.
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