Mathematics, 03.06.2020 14:03 Zaxx2974
A recent research study randomly divided participants into groups who were given different levels of Vitamin E to take daily. One group received only a placebo pill. The research study followed the participants for eight years to see how many developed a particular type of cancer during that time period. Which of the following responses gives the best explanation as to the purpose of randomization in this studyA. To increase the accuracy of the research results B. To ensure that all potential cancer patients had an equal chance of beng selected for the study. C. To reduce the amount of sampling error D. To produce treatment groups with similar characteristics E. To prevent skewness n the resuits. F. I am not familiar with this matorial
Answers: 2
Mathematics, 21.06.2019 21:50
Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.
Answers: 2
Mathematics, 22.06.2019 00:30
Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line
Answers: 2
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
Mathematics, 22.06.2019 05:00
Andres wants to share 1/2 of his birthday cake with his friends. if he has 8 friends, how much of the cake will each friend recieve? draw a model to support your work (its ok if you cant)
Answers: 2
A recent research study randomly divided participants into groups who were given different levels of...
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