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Slav-nsk
2 months ago
7

21. A college professor recorded the speed with which students ran out the door after class after taking the final exam (using a

radar gun) for each of the last 4 semesters. The histogram below shows the distribution of speed for 168 students. The maximum value is 18 mph.
The value, 18 mph, was actually supposed to be 8 mph and this error is corrected. Which of the following is true?

(A) The mean will change the same amount as than the median, and the range will change the same amount as the SD.
(B) The mean will change more than the median, and the range will change more than the SD.
(C) The median will change more than the mean, and the range will change more than the SD.
(D) The mean will change more than the median, and the SD will change more than the range.
(E) The median will change more than the mean, and the SD will change more than the range.

Mathematics
1 answer:
Svet_ta [12.7K]2 months ago
3 0

Answer:

b

Step-by-step explanation:

The correct option is (B). Correcting the error will lead to a decrease in the mean, since 8 is less than 18, and it will also lower the standard deviation because the value of 8 is nearer to the mean compared to 18.

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In a GP if T3 = 18 and T6 = 486 Find:- T10
lawyer [12517]

Answer:

The 10th term in the geometric progression is 29.

Step-by-step explanation:

Given: In a geometric series, [T3 = 18] and [T6 = 486].

To find: The term [T10]?

Solution:

A geometric sequence takes the form [a, ar, ar^2,...]

Where, a represents the first term, and r denotes the common ratio.

The nth term is expressed as [Tn = a * r^(n-1)]

From the information provided: [T3 = a * r^2 = 18]

And [T6 = a * r^5 = 486]

By dividing the second equation by the first:

[(a * r^5) / (a * r^2)] = 486 / 18

[r^3 = 27]

Taking the cube root provides: r = 3.

Inserting r into one of the equations allows us to solve for a.

Substituting r gives: [T3 = a * r^2 = 18]

Thus, the first term is a = 2, and the common ratio is r = 3.

The 10th term in the geometric progression is computed as:

[T10 = a * r^(10-1)]

[Thus, T10 = 29.]

8 0
2 months ago
Read 2 more answers
LMN is a straight angle. Find m LMP and m NMP​
PIT_PIT [12445]

Answer:

(-16x + 13)° + (-20x + 23)° = 180° (ángulo recto)

-16x° + 13° - 20x° + 23° = 180°

-36x° + 36° = 180°

-36x° = 180° - 36°

-36x° = 144°

-x° = 144°/(-36)

x° = 36°

Espero que puedas conocer esta respuesta

3 0
3 months ago
This is a cross-sectional view of candy bar ABC. A candy company wants to create a cylindrical container for candy bar ABC so th
lawyer [12517]
The response is a3.
6 0
1 month ago
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One student from a high school will be selected at random. Let A be the event that the selected student is a student athlete, an
Inessa [12570]

Answer:

0.32

Step-by-step explanation:

P(B|A) = P(A∩B) / P(A)

0.25 = 0.08 / P(A)

P(A) = 0.32

8 0
2 months ago
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Is m=0.75d-2 proportional?
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A proportion maintains a consistent ratio m/d

If m = 0.75d, then the m/d ratio translates to (0.75d)/d = 0.75

In this case, the ratio can be expressed as (.75d-2)/d = 0.75 - (2/d).

Thus, it is not proportional.

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2 months ago
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