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2 years ago

How to write in words .102

Mathematics

2 answers:

Nutka1998 [239]2 years ago

4 0

One hundred an two

hope it help you

MariettaO [177]2 years ago

3 0

The correct answer is...

one hundred two.

Any Questions? Comment Below!

-AnonymousGiantsFan

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Suppose a 90% confidence interval for the mean salary of college graduates in a town in Mississippi is given by [$38,737, $50,46

JulsSmile [24]

Answer:

a. The point estimate was of $44,600.

b. The sample size was of 16.

Step-by-step explanation:

Confidence interval concepts:

A confidence interval has two bounds, a lower bound and an upper bound.

A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the two bounds.

The margin of error is the difference between the two bounds, divided by 2.

a. What is the point estimate of the mean salary for all college graduates in this town?

Mean of the bounds, so:

(38737+50463)/2 = 44600.

The point estimate was of $44,600.

b. Determine the sample size used for the analysis.

First we need to find the margin of error, so:

$M = \frac{50463-38737}{2} = 5863$

Relating the margin of error with the sample size:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.9}{2} = 0.05$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.05 = 0.95$ , so Z = 1.64.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

For this problem, we have that $\sigma = 14300, M = 5863$ . So

$M = z\frac{\sigma}{\sqrt{n}}$

$5863 = 1.645\frac{14300}{\sqrt{n}}$

$5863\sqrt{n} = 1.645*14300$

$\sqrt{n} = \frac{1.645*14300}{5863}$

$(\sqrt{n})^2 = (\frac{1.645*14300}{5863})^2$

$n = 16$

The sample size was of 16.

7 0

2 years ago

Find the mode median, mean, and range for each data set. PLS HELP!!!

Verdich [7]

Answer:

https://www.calculator.net/mean-median-mode-range-calculator.html

Step-by-step explanation:

use this website it helps so much

6 0

2 years ago

Read 2 more answers

Can someone tell me the answer?plz I’m stuck I’ll give you brainlist and points

Savatey [412]

24-7=b is the answer

5 0

2 years ago

4. Which equation in point-slope form contains the point (-3, 5) and has slope -1? 100%

Flura [38]

ʕ•ﻌ•ʔ $\huge\bold\pink{hello!!!}$ ʕ•ﻌ•ʔ

HERE IS UR ANSWER

_____________________

(x-(-3)) = -1(y-5)

(x+3)= -y+5

x+y+3-5=0

x+y-2=0

3 0

2 years ago

The distribution of individual incomes in the United States is strongly skewed to the right. In 2013, the mean and median income

vesna_86 [32]

Answer:

The mean would be $322,343 and the median would be $196,723.

Step-by-step explanation:

Since the distribution of individual incomes is skewed to the right, it means that the distribution has a long right tail.

Drawing a distribution with this characteristic, we can see how the majority of the data falls into the left side of the graphic, meaning that a lot of people receive less income. Following this reasoning, the mean which is the amount of the data (in this case individual income) divided by the amount of people, would be the higher number, meaning that the few people who earn more money would influence in making this number higher.

Following this reasoning, the median (which is not influenced by this difference) would be the less high number.

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3 years ago