Mathematics, 21.11.2019 23:31, matthewdabber7
You are waiting for the bus, and are rather impatient. your friend tells you that busses arrive according to an exponential distribution with parameter =1/10 (busses/min) for a mean waiting time of 10 minutes. you've been waiting for a while, and want to prove their hypothesis wrong: you're thinking the wait is longer than that (one-tailed). (note: you may use the approximation e^3≈20 when applicable on this problem. you may do calculations in python if you wish, but all exposition should be in markdown.)
part a: state the null and alternative hypotheses being tested.
part b: devise a test of the form "reject if x> cx> c" where cc is how long you have to wait until the bus arrives. use a significance of α=.05α=.05. how long do you wait before you reject the null hypothesis with a probability of type i error of 5%?
part c: what is the power of your test if the true rate is λ=1/60λ=1/60? (nb: power is defined as the complement of making a type ii error: it's the rate at which you correctly reject a false null hypothesis)
part d: it turns out neither the null nor alternative are correct! the true distribution of busses was a continuous uniform distribution with pdf
Answers: 2
Mathematics, 22.06.2019 00:20, lucypackham9
Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano
Answers: 3
Mathematics, 22.06.2019 03:30, Sanchezj104
Use a calculator to verify that σ(x) = 62, σ(x2) = 1034, σ(y) = 644, σ(y2) = 93,438, and σ(x y) = 9,622. compute r. (enter a number. round your answer to three decimal places.) as x increases from 3 to 22 months, does the value of r imply that y should tend to increase or decrease? explain your answer. given our value of r, y should tend to increase as x increases. given our value of r, we can not draw any conclusions for the behavior of y as x increases. given our value of r, y should tend to remain constant as x increases. given our value of r, y should tend to decrease as x increases.
Answers: 3
You are waiting for the bus, and are rather impatient. your friend tells you that busses arrive acco...
Mathematics, 26.08.2019 14:30
English, 26.08.2019 14:30
Computers and Technology, 26.08.2019 14:30
Mathematics, 26.08.2019 14:30
Mathematics, 26.08.2019 14:30
History, 26.08.2019 14:30