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?
Answers: 2
Mathematics, 21.06.2019 18:00
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Mathematics, 21.06.2019 18:30
The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125
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Mathematics, 21.06.2019 19:00
Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers
Answers: 1
Mathematics, 21.06.2019 19:30
If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b
Answers: 1
Americans spend over $30 billion annually on a variety of weight loss products and services. in a st...
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