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3 years ago

Help me PLEASEEEEEEEEEEEEE

Mathematics

1 answer:

steposvetlana [31]3 years ago

4 0

Answer: d

Step-by-step explanation:

its d

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According to the Centers for Disease Control and Prevention, the proportion of U.S. adults age 25 or older who smoke is .22. A r

MaRussiya [10]

Answer:

The null hypothesis is $H_0: p = 0.22$

Step-by-step explanation:

According to the Centers for Disease Control and Prevention, the proportion of U.S. adults age 25 or older who smoke is .22

This means that at the null hypothesis, it is tested if the proportion is in fact 0.22, that is:

$H_0: p = 0.22$

A researcher suspects that the rate is lower among U.S. adults 25 or older who have a bachelor's degree or higher education level.

At the alternative hypothesis, it is tested if the proportion is lower than 0.22, that is:

$H_1: p < 0.22$

5 0

3 years ago

Help I need answer quickly

borishaifa [10]

Answer: D, .1

Step-by-step explanation: 10 marbles and 1 green

50 times she pulled and almost every ten tries she got green meaning there's a high chance of her getting 1 green every 10 tries

7 0

3 years ago

barb exercises for 22 hours each week. how many hours does she exercise in 14 weeks. use the array drawn on the grid go help mul

Paha777 [63]

Answer:

Step-by-step explanation:

22 times 14 is 308, so 308 hours in 14 weeks.

7 0

3 years ago

Find the equation of the line containing the points (20,-7) and (10,-2). Type your answer in this order and don't use spaces or

aliina [53]

$(\stackrel{x_1}{20}~,~\stackrel{y_1}{-7})\qquad (\stackrel{x_2}{10}~,~\stackrel{y_2}{-2}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-2}-\stackrel{y1}{(-7)}}}{\underset{run} {\underset{x_2}{10}-\underset{x_1}{20}}}\implies \cfrac{-2+7}{-10}\implies -\cfrac{1}{2}$

$\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-7)}=\stackrel{m}{-\cfrac{1}{2}}(x-\stackrel{x_1}{20}) \\\\\\ y+7=-\cfrac{1}{2}x+10\implies y=-\cfrac{1}{2}x+3$

4 0

3 years ago

What is the solution to (x + 8) > (2x + 10)?<br> (–∞, –4)<br> (–4, ∞)<br> (–∞, 4)<br> (4, ∞)

Citrus2011 [14]

Answer:

(–∞, -4)

Step-by-step explanation:

5 0

2 years ago