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Likurg_2 [28]
3 years ago
5

Suppose 20% of the students on campus smoke. you select two students at random. in what percentage of samples will both students

be smokers?
Mathematics
1 answer:
mars1129 [50]3 years ago
8 0

Answer:

4%

Step-by-step explanation:

The probability that two smoke is the product of the probabilities that each smokes, provided the students are selected independently.

... 0.20 × 0.20 = 0.0400 = 4%

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The perimeter of a square garage door is 16 yards. How long is each side of the garage door?
Andre45 [30]

Answer:

each side will be 4

Step-by-step explanation:

since a square has 4 sides the equation will be 16÷4

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The amount of fat, in grams, in granola is proportional to the volume, in cups, of the granola as shown on the graph.
AlekseyPX
4 cups = 18 g
Divide all by 4 to get 1 cup.
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Write in slope-intercept form, given m= - 8 and y-intercept (0, 4).
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Answer is A.
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A poll was taken this year asking college students if they considered themselves overweight. A similar poll was taken 5 years ag
Katyanochek1 [597]

Answer:

At 5% significance level, it is statistically evident that    there is nodifference in the proportion of college students who consider themselves overweight between the two poll                                  

Step-by-step explanation:

Given that a poll was taken this year asking college students if they considered themselves overweight. A similar poll was taken 5 years ago.

Let five years ago be group I X and as of now be group II Y

H_0: p_x =p_y\\H_a: p_x \neq p_y

(Two tailed test at 5% level of significance)

                Group I            Group II              combined p

n                  270                 300                         570

favor            120                  140                          260

p                   0.4444            0.4667                   0.4561

Std error   for differene = \sqrt{\frac{0.4561(1-0.4561)}{570} } \\=0.0209

p difference = -0.0223    

Z statistic = p diff/std error =       -1.066

p value =0.2864

Since p value >0.05, we accept null hypothesis.

        At 5% significance level, it is statistically evident that    there is nodifference in the proportion of college students who consider themselves overweight between the two poll                                  

7 0
3 years ago
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