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zhannawk [14.2K]
3 years ago
6

In the United States, there has historically been a strong relationship between smoking and education, with well-educated people

less likely to smoke. To examine whether this pattern has changed, a sample of 459 men was selected at random from those who had visited a health center for a routine check-up over the course of the past year. Education is classified into three categories corresponding to the highest level of education achieved, and smoking status is classified into four categories. Smoking Status Education Nonsmoker Former Moderate Heavy Total High School 56 54 41 36 187 College 37 43 27 32 139 Graduate School 53 28 36 16 133 Total 146 125 104 84 459 The proportion of men with a high school education that are current or former smokers is
a) 0.12. b) 0.30. c) 0.78. d) 0.70.
Mathematics
1 answer:
docker41 [41]3 years ago
3 0

Answer:

d) 0.70.

Step-by-step explanation:

High School Education = 187 men

High School Education and former smoker = 54 men

High School Education and moderate smoker =41 men

High School Education and heavy smoker = 36 men

The proportion of men with a high school education that are current or former smokers is given by the sum of former, moderate and heavy smokers with a high school education divided by the total number of men with a high school education sampled:

p = \frac{54+41+36}{187} =0.70

The proportion is 0.70.

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Answer:

m<x = 48

m<y = 132

Step-by-step explanation:

Since x and y are supplementary angles, that means their sum is 180 degrees.

And we are given that y is 12 less than 3 times the measure of x.  With this information we can make a system of linear equations.

x + y = 180

y = 3x - 12

So now plug in the value of y into the first equation.

x + y = 180

x + (3x - 12) = 180

x + 3x = 192

4x = 192

x = 48

And then plug this computed value of x back into the first equation to find the measure of y.

x + y = 180

48 + y = 180

y = 180 - 48

y = 132

So the measures of the angles are as follows:

m<x = 48

m<y = 132

Cheers.

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3 years ago
If m&lt;1 = 38 then m&lt;4 =
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Answer:

If m<1 = 38 then m<4 = 38

Step-by-step explanation:

Both of the angles equal 38 degrees. This is true because the angles are vertical, vertical angles are angles opposite each other where two lines cross. Vertical angles are also always congruent, therefore the m<4=38.

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A randomized study compared the effectiveness of two mosquito repellents. The treatment group using Spray A reported a mean of 3
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Answer:

The difference of the means is not significant because the re-randomizations show that it is within the range of what could happen by chance.​

Step-by-step explanation:

Given that:

The treatment group using Spray A reported a mean of 3.5 mosquito bites.

The treatment group using Spray B reported a mean of 5.6 mosquito bites.

After the data are  re-randomized; the differences of the means are shown in the dot plot. The dot plot is attached in the file below;

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