MATHEMATICS COLLEGE

What is 6 8th plus 7 8th

Answers

Answer 1

Answer:

Answer:

13/8

Step-by-step explanation

Since the denominator is the same, you keep it. Then you just add 6 and 7 which is 13.

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7√, 42√, 25√ from least to greatest

Answers

Answer:

7√ , 25√ , 42√

When Stephan moved from Illinois to Florida, his average monthly electric bill increased from $83 to $102. He is curious to know whether his IL or FL electric bill is relatively more or less expensive, when compared to the distribution of electric bills for each state. In Illinois, the mean monthly electric bill is $85, with a standard deviation of $3.20. In Florida, the mean monthly electric bill is $105, with a standard deviation of $4.00. Compute the z-scores for Stephan's IL and FL electric bills. Round to three decimal places if necessary.

Answers

Using it's formula, it is found that the z-scores are:

For Illinois, of Z = -0.625.

For Florida, of Z = -0.75.

Due to the lower z-score, the bill is relatively lower in Florida.

Z-score:

In a distribution with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = (X - \mu)/(\sigma)$

It measures how many standard deviations the measure is from the mean.

The higher z-score means that the measure X is relatively higher.

In Illinois:

Bill of $83, mean of $85, standard deviation of $3.2, hence $X = 83, \mu = 85, \sigma = 3.2$

Then:

$Z = (X - \mu)/(\sigma)$

$Z = (83 - 85)/(3.2)$

$Z = -0.625$

In Florida:

Bill of $102, mean of $105, standard deviation of $4, hence $X = 102, \mu = 105, \sigma = 4$

Then:

$Z = (X - \mu)/(\sigma)$

$Z = (102 - 105)/(4)$

$Z = -0.75$

Due to the lower z-score, the bill is relatively lower in Florida.

To learn more about z-scores, you can take a look at brainly.com/question/21620274

Answer: The z-scores for Stephan's IL and FL electric bills. are -0.625 and 0.75 respectively.

Step-by-step explanation:

Given: Average monthly electric bill in Illinois = $83

Average monthly electric bill in Florida = $102

Formula of z : $z=(X-mean)/(standard\ deviaton)$

In Illinois, the mean monthly electric bill is $85, with a standard deviation of $3.20.

$z=(83-85)/(3.20)= -0.625$

In Florida, the mean monthly electric bill is $105, with a standard deviation of $4.00.

$z=(105-102)/(4)=(3)/(4)=0.75$

Hence, the z-scores for Stephan's IL and FL electric bills. are -0.625 and 0.75 respectively.

Q 3.28: To create a confidence interval from a bootstrap distribution using percentiles, we keep the middle values and chop off a certain percent from each tail. Indicate what percent of values must be chopped off from each tail for a 97% confidence level. A : We keep the middle 97% of values by chopping off 1.5% from each tail. B : We keep the middle 1.5% of values by chopping off 97% from each tail. C : We keep the middle 3% of values by chopping off 97% from each tail. D : We keep the middle 3% of values by chopping off 1.5% from each tail. E : We keep the middle 97% of values by chopping off 3% from each tail.

Answers

Answer:

A : We keep the middle 97% of values by chopping off 1.5% from each tail.

Step-by-step explanation:

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

$\alpha = (1-0.97)/(2) = 0.015$

This means that for a 97% confidence interval, 1.5% of each tail is removed, while the middle 97% of values are kept.

So the corect answer is:

A : We keep the middle 97% of values by chopping off 1.5% from each tail.

29 + 15x = -x - 3. Simplified

Answers

for this equation the answer is x= -2

A manager wants to know the ratio of men to women in the factory they are wanted to 5 men and 270 woman working as a factory what is the ratio of men to women

Answers

Answer:

1 : 54

Step-by-step explanation:

5 men to 270 women

5 (men) : 270 (women)

make the ratio as small as you can by dividing the same number on both sides.

5 : 270. both sides can be divided by 5

1 : 54

It means for every 1 man working, there are 54 women working

Final answer:

The ratio of men to women in the factory is calculated by dividing the number of men by the number of women and simplifying the result. In this case, the ratio is 1:54, meaning for every man, there are 54 women.

Explanation:

The question asks to find the ratio of men to women in a factory where there are 5 men and 270 women working. To calculate the ratio of men to women, we simply divide the number of men by the number of women.

The calculation would be as follows:

Number of men: 5
Number of women: 270
Ratio of men to women: 5 ÷ 270

However, ratios are typically expressed in simplest form. Since both 5 and 270 are divisible by 5, we divide each by 5:

5 ÷ 5 = 1
270 ÷ 5 = 54
So, the simplified ratio of men to women is 1:54.

This means that for every man in the factory, there are 54 women.

Learn more about Ratio Calculation here:

brainly.com/question/31549749

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In the diagram, the measure of angle 6 is 98.what is the measure of angle 7?what is the measure of angle 7?

56 degrees
84 degrees
96 degrees
124 degrees