subject
Mathematics, 06.11.2019 03:31 jwjohnson20

Americans spend over $30 billion annually on a variety of weight loss products and services. in a study of retention rates of those using the rewards program at jenny craig in 2005, it was found that about 18% of those who began the program dropped out in the first four weeks.10 assume we have a random sample of 300 people beginning the program.
(a)what is the mean number of people who would drop out of the rewards program within four weeks in a sample of this size? what is the standard deviation?
(b)what is the approximate probability that at least 235 people in the sample will still be in the rewards program after the first four weeks?

ansver
Answers: 2

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 16:30, jaidenlaine9261
Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241. a) 0 b) 1 c) 2 d) 1 2
Answers: 1
image
Mathematics, 22.06.2019 00:50, kyleeeeee94
Given: ab ≅ bc and ao ≅ oc ok − angle bisector of ∠boc find: m∠aok
Answers: 2
image
Mathematics, 22.06.2019 01:30, colebash88
Paco orders an ice cream for $1, but realizes his wallet is at home and he only has 3/20 of $1 with him. if his mom pays the remaining 7/20 of the dollar, how much will she pay? $0.05 $0.15 $0.85 $0.95
Answers: 1
image
Mathematics, 22.06.2019 03:00, 19mcgough
Harold wrote this equation to model the level of water in a pool over time. the variable x represents time in hours. f(x) = 3,500 - 225x which statements about the situation are true? check all that apply. the water level is rising. the water level is falling. the initial level of water in the pool was 3,500 units. the initial level of water in the pool was 225 units. the pool was empty after 14 hours. the water was 2,600 units high after 4 hours.
Answers: 2
You know the right answer?
Americans spend over $30 billion annually on a variety of weight loss products and services. in a st...

Questions in other subjects:

Konu
Mathematics, 12.12.2021 23:10
Konu
Mathematics, 12.12.2021 23:10