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valina [46]
3 years ago
9

A drug company is testing a new blood pressure medication. 100 patients with high blood pressure will be divided into two groups

, A and B. Group A will be given the new medication for 30 days, while group B will receive a placebo. Which method would be best for forming the two groups? A) Let the 100 patients decide among themselves which group they wish to be in. B) Divide the 100 patients based on their family history of high blood pressure. C) Write the names on same-sized slips of paper, put them in a box, then close your eyes and choose 50. D) Select members for the two groups so that their mean blood pressures are as close to equal as possible.
Mathematics
2 answers:
ohaa [14]3 years ago
4 0
I would say C.
A and B make no sense, you want to divide the group randomly because you want to test the new medicine. D is a bit more logical than A and B but still can't, because that isn't random.
Vinvika [58]3 years ago
3 0

Answer:

C) Write the names on same-sized slips of paper, put them in a box, then close your eyes and choose 50.

Step-by-step explanation

Usatestprep said it was right

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sineoko [7]

Answer:

h= 1500\,*\,sin(43^o)

Step-by-step explanation:

Notice that there is a right angle triangle formed with sides as follows:

hypotenuse is the actual 1500 ft string. The acute angle 43 degrees is opposite to the segment that represents the height of the kite from the ground. Therefore, the trigonometric ratio that we can use to find that opposite side to the given angle, is the sine function as shown below:

sin(43^o) = \frac{opposite}{hypotenuse} \\sin(43^o) = \frac{opposite}{1500}\\opposite = 1500\,*\,sin(43^o)\\h= 1500\,*\,sin(43^o)

8 0
3 years ago
What is the equation of the line?
prohojiy [21]

Answer:

A) y = -1/2x + 1/2

Step-by-step explanation:

Find the y-intercept(when x = 0), which is 1/2.

Find the slope: m = y2-y1 / x2-x1

I used points: (3, -1), (-3,2)

m = 2 - (-1) / -3 - 3

m = 3 / - 6

m = -1/2

plug this into the slope intercept form equation: y = mx + b

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7 0
3 years ago
Mikey's family is taking a road trip. Their car can travel no more than 260 miles without needing to refill the gas tank. They h
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The solution to the inequality is that Mikey's family can drive at most 148

Inequality shows the non equal comparison of numbers or expressions.

Given that Mikey situation can be represented by the inequality:

112 + x ≤ 260

Solving the inequality:

112 + x ≤ 260

Subtract 112 from both sides of the equation:

112 + x - 112 ≤ 260 - 112

x ≤ 148

Hence from the inequality, we can see that Mikey's family can drive

at most 148

Find out more at: brainly.com/question/25285332

6 0
2 years ago
12 and 1/2 + 1 and 5/8
ki77a [65]

Answer: 14 1/8

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<u>Least Common Denominator:</u>

\frac{1}{2} = \frac{4}{8}

\frac{5}{8} = \frac{5}{8}

12 4/8 + 1 5/8 = 13 9/8

Notice that 9/8 is an improper fraction so we can change it to a mixed number.

9/8 = 1 1/8

13 + 1 and 1/8 = 14 1/8

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Answer:

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