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marta [7]
2 years ago
6

If the heights of a population of men are approximately Normally distributed, and the middle 99.7% have heights between 5'0" and

7'0", what is the standard deviation of the heights of the population?
a. 1"

b. 12"

c. 6"

d. 4"

e. 3"
Mathematics
1 answer:
kirza4 [7]2 years ago
5 0

Answer:

4 inches

Step-by-step explanation:

the middle number is 6 and the distance from 99.7 from the middle is 3 standard deviations. 12/3 =4

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Answer:

Step-by-step explanation:

The correct question is

Zena needs a salesperson. Salesperson A is offering his services for an initial $50 in addition to $5 per hour. salesperson B is offering her services for an initial $40 in addition to $7 per hour. When will the two coaches charge the same amount of money?

Let

x ----> the number of hours

y ----> the total charge

we know that

Salesperson A

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Salesperson B

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To find out when the two coaches charge the same amount of money, equate equation A and equation B and solve for x

7x+40=5x+50

7x-5x=50-40

2x=10

<h2>x=5 hours i think just im not sure but i tried</h2>
7 0
3 years ago
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If a movie ticket cost $10 in 2016, what was its price in 1980
zaharov [31]

Answer:

It would be in the $3.30 or lower zone

Step-by-step explanation:

8 0
3 years ago
Pls, look at picture for the question.
Lady bird [3.3K]

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8 0
3 years ago
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TW¯¯¯¯¯¯¯¯¯=14.6, CW¯¯¯¯¯¯¯¯¯=6, TU¯¯¯¯¯¯¯=21.2. Find the value of VW¯¯¯¯¯¯¯¯¯.
pogonyaev

TW x WU = CW x VW

Fill in the known values:

WU = TU - TW = 21.2 - 14.6 = 6.6

14.6 x 6.6 = 6 x VW

Simplify:

96.36 = 6VW

Divide both sides by 6:

VW = 96.36 / 6

VW = 16.06

Round to one decimal place:

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Serga [27]
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explanation:
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