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ss7ja [257]
3 years ago
11

A book publisher counted the words on each page of a series of books. They found that the number of words per page followed a no

rmal distribution with a mean of 265 words and a standard deviation of 25 words.
What percentage of the pages contain fewer than 215 words?
Mathematics
2 answers:
vagabundo [1.1K]3 years ago
7 0

Answer:

The answer is 2.5%

Step-by-step explanation:

Took test on edmentum and made 100%.

galben [10]3 years ago
5 0

Answer:

b. 2.5%

Step-by-step explanation:

Plato

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Determine the standard form of the equation of the line that passes through (6,0) and (2,-7).
lesya [120]

Answer:

-7x + 4y = +42

Step-by-step explanation:

Going from point (2, -7) to point (6, 0), x increases by 4 and y increases by 7.  Thus, the slope of the line in question is m = 7/4.

Starting from the equation y = mx + b, and subbing (7/4) for m, 6 for x and 0 for y, we get:

0 = (7/4)(6) + b.  Then b = 42/4, or 21/2.  Thus, we now have y = (7/4)x + 21/2.

We must put this into "standard form."  Multiplying all three terms by 4, we get:

4y = 7x + 42.  Rearranging these terms to fit the "standard form" equation Ax + By = C, we get:

-7x + 4y = +42

5 0
3 years ago
Let X denote the number of cousins of a randomly selected student. Explain the difference between StartSet Upper X equals 2 EndS
Liono4ka [1.6K]

Answer:

A. (X =4) is the event that the student has four cousins: P(X-4) is the probability of the event that the student has four cousins.

Step-by-step explanation:

An event is an individual outcome or any number of outcomes of a random experiment or trial. An even that contains only one sample point is called a simple event. A compound event contains more than 1 sample point and is formed by the union of simple points.

An event A is said to occur only and if only the outcome of the experiment corresponds to some element of A.

In the given question the first symbolic representation gives an event and the second symbolic representation gives the probability.

The probability of X = 2 or 4 is given by P (X=2) or  P (X=4) symbollically.

So A is the best choice.

The relative frequency gives the probability  so choice B,C and D are wrong.

6 0
3 years ago
What are the new coordinates of (6, -1) if it is shifted 7 units to the left
sineoko [7]
The answer is -1


Byee.........?..
8 0
3 years ago
Please find the areas of the four rectangles and ADD<br> them together. Fill in the spaces below.
Andrei [34K]
Total area = 9 x5 =45
Total area = (6+3)(4+1)=24+6+12+3=45
4 0
3 years ago
PLEASE HURRY!!
Masteriza [31]
John Doe makes 420,000 from basketball, and 3,200,000 which is 3,620,000 combined which is 300,039,000 less than Bobby Smyth (3.00039 x 10^8) i believe
4 0
3 years ago
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