In a clinical trial of 2165 subjects treated with a certain​ drug, 21 reported headaches. In a control group of 1718 subjects given a​ placebo, 23 reported headaches. Denoting the proportion of headaches in the treatment group by pt and denoting the proportion of headaches in the control​ (placebo) group by pc​, the relative risk is pt​/pc. The relative risk is a measure of the strength of the effect of the drug treatment. Another such measure is the odds​ ratio, which is the ratio of the odds in favor of a headache for the treatment group to the odds in favor of a headache for the control​ (placebo) group, found by evaluating StartFraction p Subscript t Baseline divided by (1 minus p Subscript t Baseline )Over p Subscript c Baseline divided by (1 minus p Subscript c Baseline )EndFraction . The relative risk and odds ratios are commonly used in medicine and epidemiological studies. Find the relative risk and odds ratio for the headache data. What do the results suggest about the risk of a headache from the drug​ treatment?

Answers

Answer 1
Answer:

Answer

Relative risk= 0.742

Odds ratio= 0.745

Detailed calculation shown in diagram:


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if you know the order from least to greatest of 5 negative rational numbers how can you use the information to order the absolute value of those numbers from least greatest

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Consider the ordering

... -2 < -1

Now consider the ordering of their absolute values:

... 1 < 2

_____

Hopefully, you see that changing the sign reflects the sequence across the origin, so that the ordering is reversed when the signs are changed.

What is the sum in simplest form?
4 1/2 + 1 3/5

Answers

Answer:

23  1/10

Step-by-step explanation:

Final answer:

To find the sum in simplest form of 4 1/2 and 1 3/5, you convert each to an improper fraction, adding the fractions and convert back to a mixed number. The sum is 6 1/10.

Explanation:

The sum in simplest form of the two numbers 4 1/2 and 1 3/5 can be calculated as follows:

  1. Change each mixed number into an improper fraction. 4 1/2 becomes 9/2 and 1 3/5 becomes 8/5.
  2. Then add the two fractions: 9/2 + 8/5 equals 45/10 + 16/10 (after finding a common denominator), which equals 61/10.
  3. Finally, convert back to a mixed number to get 6 1/10.

So, the sum in the simplest form of 4 1/2 and 1 3/5 is 6 1/10.

Learn more about Fraction Addition here:

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in calculating interest in the U.S. Rule from the last partial payment, the interest is subtracted from the adjusted balance true or false

Answers

The answer is False.

Recall from Example 1 that whenever Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing four red marbles, five green ones, four white ones, and two purple ones. She grabs eight of them. Find the probability of the following event, expressing it as a fraction in lowest terms.She has at least one green one.

Answers

Suzan has a 1/3 chance of having at least one green

Which is an example of a situation that is in equilibrium?A. The amount of air in a room increases quickly when the door is
opened.
B. The amount of money in a bank account never changes
C. The amount of water in a cup decreases as it evaporates
D. A flower slowly grows taller​

Answers

Answer:B the amount of money in a bank account never changes.

Step-by-step explanation:

Answer:

B. The amount of money in a bank account never changes.

Step-by-step explanation:

Equilibrium is achieved when the state of a reversible reaction of opposing forces cancel each other out. While in a state of equilibrium, the competing influences are balanced out. Imagine a cup with a hole in it being filled with water from a tap. The level of water in this cup would stay the same if the rate at which the water that flows inside is the same as the water that flows outside. Option B will be the correct answer because the amount of money going into the account is at the same rate of money coming out of the account.

Marcus states that the polynomial expression 3x3 – 4x2y + y2 + 2 is in standard form. Ariel states that it should be y2 – 4x2y + 3x3 +2. Explain which student is correct and why.

Answers

The standard form of a polynomial is: P(x) = ax^n + bx^(n-1) + cx^(n-2) + .... + d where the exponent of the variable decrease to 0.

Marcus and Ariel are both correct.

Given that:

M \to Marcus

A \to Ariel

So, we have:

M = 3x^3 - 4x^2y + y^2 + 2

A = y^2 - 4x^2y + 3x^3 + 2

For Marcus polynomial

M = 3x^3 - 4x^2y + y^2 + 2

The variable is x and the degree of the polynomial is 3.

Marcus' representation is correct

For Ariel polynomial

A = y^2 - 4x^2y + 3x^3 + 2

The variable is y and the degree of the polynomial is 2.

Ariel' representation is also correct

Hence, we can conclude that Marcus and Ariel are correct with their representation of polynomial

Read more about polynomials at:

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Answer:

They are both correct because there is more than one way to write a multivariable polynomial in standard form. Marcus has the exponents on the x variable in descending order from the highest degree to the lowest degree. Ariel has the exponents on the y variable in descending order from the highest degree to the lowest degree.

Step-by-step explanation:

edge book