The means and mean absolute deviations of the amount of rain that fell each day in a local city, last week and this week, are shown below. Means and Mean Absolute Deviations of Rainfall Last Week and This Week Last Week This Week Mean 19.7 cm 19.3 cm Mean Absolute Deviation 4.6 cm 5.2 cm The difference in the mean rainfall is approximately what percent of the mean absolute deviation of the data sets? 8% 23% 27% 67%

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Answer 1

Answer:

Answer:

Step-by-step explanation:

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The average starting salary of this year's vocational school graduates is $35,000 with a standard deviation of $5,000. Furthermore, it is known that the starting salaries are normally distributed. What are the minimum and the maximum starting salaries of the middle 95% of the graduates

Answers

Answer:

Minimum: $25,200

Maximum: $44,800

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question:

$\mu = 35000, \sigma = 5000$

What are the minimum and the maximum starting salaries of the middle 95% of the graduates

Minimum: 50 - (95/2) = 2.5th percentile.

Maximum: 50 + (95/2) = 97.5th percentile

2.5th percentile:

X when Z has a pvalue of 0.025. So X when Z = -1.96.

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

$-1.96 = (X - 35000)/(5000)$

$X - 35000 = -1.96*5000$

$X = 25200$

The minimum is $25,200

97.5th percentile:

X when Z has a pvalue of 0.975. So X when Z = 1.96.

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

$1.96 = (X - 35000)/(5000)$

$X - 35000 = 1.96*5000$

$X = 44800$

The maximum is $44,800

The ratio of green apples to red apples at a grocery store is 2 to 3. There are 78 red apples at the grocery store. What is the total number of apples at the store?

Answers

Answer:

Step-by-step explanation:

78 divided by 3 is 26

26 times 2 is 52

P divided by 8.2 = 9.3
who is smart

Answers

The value of p is 76.26 is the equation p divided by 8.2 = 9.3

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

p divided by 8.2 = 9.3

A division is a process of splitting a specific amount into equal parts.

We have to find the value of p.

p/8.2 = 9.3

p divided by eight point two equal to nine point three

Apply cross multiplication

p=9.3×8.2

p=76.26

Hence, the value of p is 76.26 is the equation p divided by 8.2 = 9.3

To learn more on Equation:

brainly.com/question/10413253

#SPJ2

Answer:

$(P)/(8.2\n)=9.3\n\nP=9.3 x 8.2 \n\nP= 76.26$

Step-by-step explanition

In algebra the divide sign is not usually used, so we put a fraction line instead.
After that, we take 8.2 to the right hand side in order to find the value of "P". Since it was divided on the left-hand side, we turn the sign into a multiply, as we moved it on the other side of the equal sign.
The last step is to solve it, multiply the 2 numbers and you hve your answer.

Hope This Helps!

Root 25-2(3+4*(-2)) whole square

Answers

Answer:

-45.

Step-by-step explanation:

I am assuming you mean

√25 - 2(3 +4(-2))^2

= 5 - 2(3-8)^2

= 5 - 2 * (-5)^2

= 5 - 2*25

= -45.

A television is 36 inches by 18 inches. What is the area?

Answers

The area would be length times width so the answer is 648 squared inches!

we know that area of a rectangle is length(×)its breadth and the television is a rectangular screen so the area of television screen is 36 X 18 that is 648square inches.
hope this is helpful

What is 9 + 2x = -x + 3

Answers

Answer:

x=-2

Step-by-step explanation:

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