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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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Here are the shopping times (in minutes) of ten shoppers at a local grocery store.
d1i1m1o1n [39]

The frequency which is to filled in the table is 3,1,2,4.

Given  shopping time of ten shopkeeper: 36,20,32,18,20,33,28,34,37,23.

We have to complete the frequency in the table. Frequency of something is the number of times that number is coming.

Shopping time is given as 36,20,32,18,20,33,28,34,37,23.

Intervals for which frequency is given is 18 to 22, 23 to 27, 28 to 32, 33 to 37.

Numbers in the range 18 to 22=18,20,23 therefore 3

Numbers in the range 23 to 27=23 therefore 1

Numbers in the range 28 to 32=32 , 28  therefore 2

Numbers in the range 33 to 37=36, 33, 37, 34 therefore 4.

Hence the frequency which is to filled are 3,1,2,4.

Learn more about  frequency at brainly.com/question/254161

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8 0
2 years ago
Solve five ninths minus two sixths equals blank.
Oksanka [162]

Answer:

2/9

Step-by-step explanation:

5/9 -2/6 = 2/9

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8 0
2 years ago
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Student incorrectly claims that 2/3÷5/9 = 5/6 find the correct quotient what was the students error
olga_2 [115]

Answer:

6/5

Step-by-step explanation:

2/3 ÷ 5/9

2/3 × 9/5 ( while changing division to multiple, numerator and denominator changes

2 × 3/5 ( 9/3 =3

Ans =6/5

6 0
2 years ago
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nlexa [21]
The first one is 5
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7 0
3 years ago
Complete factorization
Lostsunrise [7]

Answer:

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Step-by-step explanation:

6x³ - 15x² - 9x

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3x (x (2x + 1) - 6x - 3)

3x (x (2x + 1) - 3 (2x + 1))

= 3x <u>(</u><u>2</u><u>x</u><u> </u><u>+</u><u> </u><u>1</u><u>)</u> (x - 3)

one of the factor of the complete factorization is <u>A</u><u>.</u><u> </u><u>2</u><u>x</u><u> </u><u>+</u><u> </u><u>1</u>

5 0
2 years ago
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