Measurements of scientific systems are always subject to variation, some more than others.
there are many structures for measurement error, and statisticians spend a great deal of time modeling these errors.
suppose the measurement error x of a certain physical quantity is decided by the density function
f(x)=k(3−x2), for −1≤x≤1,

f(x)=0, elsewhere.

(a) determine k that renders f(x) a valid density function.
(b) find the probability that a random error in measurement is less than 1/2.
(c) for this particular measurement, it is undesirable if the magnitude of the error (i. e., |x|)
exceeds 0.8. what is the probability that this occurs?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Ineed someone to me answer my question i have to have this done and knocked out

Christine wong has asked dave and mike to her move into a new apartment on sunday morning. she has asked them both, in case one of them does not show up. from past experience, christine knows that there is a 40% chance that dave will not show up and a 30% chance that mik a. what is the probability that both dave and mike will show up? (round your answer to 2 decimal places.) b. what is the probability that at least one of them will show up? c. what is the probability that neither dave nor mike will show up? (round your answer to 2 decimal places.)e will not show up. dave and mike do not know each other and their decisions can be assumed to be independent.