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konstantin123 [22]
3 years ago
12

In one study of 300 coffee drinkers and 150 non coffee drinkers, it was found that only 67 of the coffee drinkers had high blood

pressure. The newspaper reported the published study and included the sentence, "You are 1.3 times more likely to have high blood pressure if you don’t drink coffee compared to if you do drink coffee." How many of the non coffee drinkers had high blood pressure?
Mathematics
1 answer:
Katarina [22]3 years ago
4 0
تبي الصراحه معرف الحل بس التطبيق ذا يخليني اجاوب على سؤالين عشان يخليني اسأل اسفه ماعرفت الإجابة بس يله حبتين ل عيون تشان.
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Enter the equation of the line in the form y=mx+b<br><br><br><br> pls help its due in 20 minutes!!
tia_tia [17]

Answer: y = 3x-2

Step-by-step explanation:

M = rise over run ( y2-y1 / x2-x1 )

Points I chose : ( 0,-2 ) ( 1,1 )

( 1-(-2) / 1-0 = 3/1

M = 3

Y = Mx + b

1 = (3) + b

B = -2

7 0
3 years ago
A published report of a repeated-measures research study includes the following description of the statistical analysis. "The re
balandron [24]

Answer:

3 treatment conditions were compared in the study.

14 individuals participated in the study.

Step-by-step explanation:

Consider the provided information.

Part (A) How many treatment conditions were compared in the study?

There are two sets of degrees of freedom; one for the numerator and one for the denominator.

F ratio is defined as: df=(df_{\text{Between treatment}}, df_{error})

The formula for between treatment is: df_{\text{Between treatment}}=k-1

Substitute df_{\text{Between treatment}}=2 in above formula.

2=k-1

k=3

Therefore, 3 treatment conditions were compared in the study.

Part (B) How many individuals participated in the study?

The error degree of freedom is df_{error}=(k-1)(n-1)

Substitute df_{error}=26 and k=3 in above formula.

26=(3-1)(n-1)

26=2(n-1)

14=n

Hence, 14 individuals participated in the study.

3 0
3 years ago
How did he get from 3^-16/3/3^-8/3 to 0.00285333857/0.00285333857??? (The circled part) Because when I put it in the calculator
seropon [69]

Step-by-step explanation:

\frac{ {3}^{ -  \frac{16}{ 3} } }{ {3}^{  - \frac{ 8}{3} } }  =  \frac{0.002853338}{0.05341665075}

I think, he made a mistake because the exponents have different values but then if you'll look at his results, he just wrote the same thing. If you want, you could post the original problem, and I'll solve it for you :)

7 0
3 years ago
the graph of the absolute value parent function is vertically stretched by a factor of three, then shifted two units left &amp;
ahrayia [7]

Answer:

  • y =  3 | x + 2 | - 5

Step-by-step explanation:

<u>The absolute value function is:</u>

  • y = | x |

<u>Step 1. Function is vertically stretched by a factor of 3:</u>

  • y = 3 * | x |

<u>Step 2. Shifted two units left:</u>

  • y = 3 | x + 2 |

<u>Step 3. Shifted 5 units down:</u>

  • y =  3 | x + 2 | - 5

<em>See attached</em>

<em>Steps are </em><em>Black → Blue → Green → Red</em>

6 0
3 years ago
We are interested in conducting a study to determine the percentage of voters of a state would vote for the incumbent governor.
Vladimir [108]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.05}{1.96})^2}=384.16  

And rounded up we have that n=385

Step-by-step explanation:

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025. And the critical value would be given by:

z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

And on this case we have that ME =\pm 0.05 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

The estimated proportion for this case is \hat p=0.5. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.05}{1.96})^2}=384.16  

And rounded up we have that n=385

4 0
3 years ago
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