Mathematics, 14.10.2021 22:10 gobbler80

Yizhang and Cheryl were waiting for Prof. Stoyanov to come for a meeting. Yizhang proposed a bet. He said that he would toss a fair coin 100 times, and if it landed tails more than 60 times, he would give Cheryl $5, otherwise Cheryl would give him $5...but Cheryl didnt want to do this. She was not sure that the coin was fair, and proposed the following test - Yizhang would toss the coin 30 times, and she would see how many times the coin landed tails, and then decide. Required:
a. How many times would you expect the coin to land tails in 30 tosses?
b. If the coin lands tails 10 times, should Cheryl play?

Answers: 2

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 21:00

Even if a person is in very good shape, applying to be a police officer requires commitment to fitness. applicants must pass a physical fitness test. in order to prepare for the test, janet purchases an activity tracker to court her steps. her goal is to walk 10,000 steps each day. she measures heard average step length to be 30 inches. play janet runs, her average steps length increases to 36 in. how many steps would she have to take to run 1 mile 50280 round to the nearest step

Answers: 3

Answer

Mathematics, 21.06.2019 22:30

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Answers: 1

Answer

Mathematics, 22.06.2019 04:30

The perimeter of a regular pentagon is represented by the expression 35d-25. daryl correctly wrote expression to represent the one side of the pentagon

Answers: 1

Answer

Mathematics, 22.06.2019 04:50

The random variable x has probability density function f (x) = k(−x²+5x−4) 1 ≤ x ≤ 4 or =0 1 show that k = 2/9 find 2 e(x), 3 the mode of x, 4 the cumulative distribution function f(x) for all x. 5 evaluate p(x ≤ 2.5). 6 deduce the value of the median and comment on the shape of the distribution.

Answers: 3

Answer

You know the right answer?

Yizhang and Cheryl were waiting for Prof. Stoyanov to come for a meeting. Yizhang proposed a bet. He...

Questions