Mathematics, 24.12.2019 23:31 Serenitybella
Twenty-five percent of the customers entering a grocery store between 5 p. m. and 7 p. m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.
(a) what is p(1), that is, p(x = 1)? (round the answer to five decimal places.)
p(1) =
(b) what is p(x 1)? (round the answer to five decimal places.)
p(x 1) =
(c) what is p(2 x)? (round the answer to five decimal places. hint: make use of your computation in part (
p(2 x) =
(d) what is p(x 1)? (round the answer to five decimal places.)
p(x 1) =
Answers: 1
Mathematics, 21.06.2019 18:00, logansgirl3228
Don't know how to find x given these segment lengths
Answers: 1
Mathematics, 21.06.2019 19:50, Roshaan8039
Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
Answers: 3
Twenty-five percent of the customers entering a grocery store between 5 p. m. and 7 p. m. use an exp...
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