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3 years ago

11

Twice one number is 15 less than a second number. when 13 is added to the second number,the result is 7 less than 9 times the fi

rst number

1 answer:

inna [77]3 years ago

8 0

Anwser is 15 beacuse i got the anwser right now

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The median of a data set 8, 21, 17, and 13 is 15. If 17 is changed to 18, what will be the new median? a. 15.5 c. 50 b. 17.5 d.

lubasha [3.4K]

Answer:

Option A) 15.5 is correct

The new median for the new data set is 15.5

Step-by-step explanation:

Given data set is 8,21,17,13

To find the median :

First order the given set of data into least to greatest

The ordered set is 8,13,17,21

Since the given set of data is even

We can take midvalues of data in the set

Median is the mean of two middle values in the data set

$Median=\frac{13+17}{2}$

$=\frac{30}{2}$

$=15$

Therefore Median=15 ( given )

Given that if 17 is changed to 18 then the given set of data 8,21,17,13 is changed into new set 8,21,18,13

To find the median :

First order the new set of data into least to greatest

The ordered set is 8,13,18,21

Since the given set of data is even

We can take two midvalues of new data in the set

Median is the mean of two middle values in the data set

$Median=\frac{13+18}{2}$

$=\frac{31}{2}$

$=15.5$

Therefore New Median=15.5

Therefore option A) 15.5 is correct

The new median for the new data set is 15.5

5 0

3 years ago

The following gambling game has been proposed, which a player must pay to play. First, a value U is chosen uniformly from the se

Vesna [10]

Answer:

The player should be required to pay $5 to make this a fair game.

Step-by-step explanation:

U ~ Uniform(0, 10)

E[U] = (0 + 10)/2

= 5

X | U ~ Poisson(U)

E[X | U] = U

By law of total probability for expectations,

E[X] = E[E[X|U]] = E[U] = $5

Therefore the player should be required to pay $5 to make this a fair game.

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3 years ago

A rectangular room room with a length of 16 feet, a width of 14 feet, and a height of 10 feet. What is the volume of the room

patriot [66]

V=LWH (multiply the length, width and height)
So plug in the numbers, V=6x14x10=840 ft^3 (feet cube)

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3 years ago

How much larger would the volume of a prism be if it was increased by a scale factor of 5

jek_recluse [69]

We know that

if the volume of a prism <span>it was increased by a scale factor of 5
then
</span>the original volume is multiplied by 5*5*5-------> 5³=125

therefore
the new volume compared with the original is 125 times larger

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3 years ago

Jessie recently drove to visit her parents who live 756 miles away. On her way there her average speed was 21 miles per hour fas

mixer [17]

Answer:

the answer is 456 miles per hour

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2 years ago