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2 years ago

PLEASE ANSWER BRAINIEST

Mathematics

2 answers:

taurus [48]2 years ago

7 0

Answer:

first box is 18 second is 32 and third is 8

Step-by-step explanation:

timofeeve [1]2 years ago

3 0

Answer:

Step-by-step explanation:

3 6 8

18 36 48

your ratio is 1:6, so however many boxes you have, just multiply by 6 to get the candle number

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Please answer the question from the attachment.

Nostrana [21]

10-4=6
3*2k= 6k
6k=6
K=1 is the answer

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3 years ago

Melissa collects data on her college graduating class. She finds out that of her classmates, 60% are brunettes, 20% have blue ey

Ivahew [28]

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Jesus bought 5/6 pounds of peanuts. He ate 3/4 pound of the peanuts with his friends. how much does Jesus have left?

Bad White [126]

Answer:

Step-by-step explanation:

Total peanuts = 5/6pounds

They ate = 3/4 of the peanut

= 3/4 × 5/6 = 5/8pounds

They eat 5/8 pounds

Amount left = 5/6 - 5/8

= (20 - 15)/24

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Jesus had 5/24 pounds of peanuts left

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2 years ago

Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Consider the

Dafna1 [17]

Answer:

a) $\bar d= \frac{\sum_{i=1}^n d_i}{n}=72.2$

$s_d =\sqrt{\frac{\sum_{i=1}^n (d_i -\bar d)^2}{n-1}} =9.311$

b) The 90% confidence interval would be given by (63.330;81.070)

$63.330 < \mu_{left}- \mu_{right}$

Step-by-step explanation:

1) Previous concepts and notation

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Let put some notation

x=left arm , y = right arm

x: 175 169 182 146 144

y: 102 101 94 79 79

The first step is define the difference $d_i=x_i-y_i$ , that is given so we have:

d: 73, 68, 88, 67, 65

The second step is calculate the mean difference

$\bar d= \frac{\sum_{i=1}^n d_i}{n}=72.2$

The third step would be calculate the standard deviation for the differences, and we got:

$s_d =\sqrt{\frac{\sum_{i=1}^n (d_i -\bar d)^2}{n-1}} =9.311$

2) Confidence interval

The confidence interval for the mean is given by the following formula:

$\bar d \pm t_{\alpha/2}\frac{s_d}{\sqrt{n}}$ (1)

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=5-1=4$

Since the Confidence is 0.90 or 90%, the value of $\alpha=0.1$ and $\alpha/2 =0.05$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.05,4)".And we see that $t_{\alpha/2}=2.13$

Now we have everything in order to replace into formula (1):

$72.2-2.13\frac{9.311}{\sqrt{5}}=63.330$

$72.2+2.13\frac{9.311}{\sqrt{5}}=81.070$

So on this case the 90% confidence interval would be given by (63.330;81.070)

$63.330 < \mu_{left}- \mu_{right}$

3 0

2 years ago

PLEASE HELP ME I WILL GIVE YOU POINTS

patriot [66]

The answer would be C because the y-intercept tells you what y when x is 0. In this case, y is wage and x is years of experience. So, if you have 0 years of experience you get an average of 7.25 dollars per hour, which is C.

8 0

2 years ago