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3 years ago

Anyone inbox me dear friends .

Mathematics

1 answer:

Vladimir [108]3 years ago

4 0

Sure, but what do you mean by that?

Its it like a question ot like what

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Solve 7^x-2 =30.

Anna007 [38]

Answer:

x = 3.748

Step-by-step explanation:

this problem requires logs

$log_{7} 30 = x-2$

x = 2 + log_7 (30) or 3.7479

3 0

2 years ago

Assume a researcher recruits 150 African American and Caucasian individuals taking warfarin to determine if there is a differenc

Anettt [7]

Answer:

Z=11.0

Step-by-step explanation:

Let Caucasian individuals be the population 1 and African American be the population 2. So, we are given that

n=150

n1=75

mean1=xbar1=6.1.

standard deviation1=S.D1=σ1=1.1.

Variance1=V(x1)=σ1²=1.1²=1.21.

n2=75.

mean2=xbar2=4.3.

standard deviation2=S.D2=σ2=0.9.

Variance2=V(x2)=σ2²=0.9²=0.81.

The z-statistic is

$Z=\frac{xbar1-xbar2}{\sqrt{\frac{V(x1)}{n1}+ \frac{V(x2)}{n2} } }$

$Z=\frac{6.1-4.3}{\sqrt{\frac{1.21}{75}+ \frac{0.81}{75} } }$

$Z=\frac{1.8}{\sqrt{0.0161+ 0.0108 } }$

$Z=\frac{1.8}{\sqrt{0.0269 } }$

$Z=\frac{1.8}{0.164 } }$

Z=10.97

Z=11.0

So, the z value obtained while calculating the test statistic is approximately 11.0.

4 0

3 years ago

Help with this question please

lilavasa [31]

The answer to this is .64.

5 0

3 years ago

The Venn diagram is shown below

Lelu [443]

n(A), n(B) and n(AnB) are given and n(AUB)'s complement is asked.

3 0

3 years ago

Question 7 (1 point)

koban [17]

Answer:

hfdd doja Sykes dms summa dmm ma d.l kiss am liz sem la d.l luff to Ltd full Ltd el Ltd does shows shoes

3 0

3 years ago

Anyone inbox me dear friends .​

Anyone inbox me dear friends .