Mathematics, 03.05.2020 13:08 ayoismeisalex
A study showed that people who take vitamin C daily have a significantly better chance of protecting against a cold than those who did not take the vitamin daily. Which of the following statements is correct?
I. This is an observational study and not an experiment.
II. This study provides evidence that taking vitamin C daily contributes to protecting against a cold.
III. The general health consciousness of people who take vitamin C could be a confounding variable.
a. I only
b. III only
c. I and III only
d. II and III only
e. I, II, and III
Answers: 1
Mathematics, 21.06.2019 16:00
Josephine has a great garden with and area of 2x2 + x - 6 square feet
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Mathematics, 21.06.2019 16:50
Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.
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