A certain federal agency employs three consulting firms; A, B and C. The probability that the federal agency employs company A is .40, company B is .35 and company C is .25 respectively. From past experience it is known that the probability of cost overruns given the consulting firm is employed is.05 for company A, .03 for company B and .15 for company C. Suppose a cost overrun is experienced by an agency(a) What is the probability that the consulting firm involved is company (b) What is the probability that it is company
Its used to find the area and circumference of a circle
It is the 16th letter of the Greek alphabet
Used to represent the mathematical constant.
Pi is the ratio of the circumference/diameter.
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People who eat lots of fruits and vegetables have lower rates of colon cancer than those who eat little of these foods. Fruits and vegetables are rich in "antioxidants" such as vitamins A, C, and E. Will taking antioxidants help prevent colon cancer? A medical experiment studied this question with 864 people who were at risk of colon cancer. The subjects were divided into four groups: daily beta-carotene, daily vitamins C and E, all three vitamins every day, or daily placebo. After four years, the researchers were surprised to find no significant difference in colon cancer among the groups(a) What are the explanatory and response variables in this experiment?(b) Outline the design of the experiment. Use your judgment in choosing the group sizes.(c) The study was double-blind. What does this mean?(d) What does "no significant difference" mean in describing the outcome of the study?(e) Suggest some lurking variables that could explain why people who eat lots of fruits and vegetables have lower rates of colon cancer. The experiment suggests that these variables, rather than the antioxidants, may be responsible for the observed benefits of fruits and vegetables.
(a). The explanatory variables are the antioxidant group, the response variable is the result of the rate of colon cancer
(b)The design of the experiment is stratified Random sampling. I'll suggest there divided into equal group of 216 each.
(c). Double blind is when the people subjected to the experiment are not in the know if they're given placebo or the real antioxidant
(d) No significant difference mean, there is no convincing relationship that those that engage in using antioxidant have reduced colon cancer rate.
(e) Awareness of its history in family, age also.
-3x = 24 Solve for X
-3x = 24 /-3 on both sides x = -8
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1. The last one
2. The third one
Miguel and his family are on vacation and notice an advertisement fee of 0.75
Find the perimeter of the figure. Please consider helping!