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Sonbull [250]
3 years ago
15

A set of college student heights are normally distributed with a mean of 170.4 centimeters and a standard deviation of 10 centim

eters. What proportion of student heights are between 145 centimeters and 171 centimeters? You may round your answer to four decimal places.
Mathematics
1 answer:
Dmitrij [34]3 years ago
3 0

Answer:

0.550127

Step-by-step explanation:

Prob ( 145 < x < 171) =

Prob (  (145 - 170.4)/10 < z < (171-170.4)/10 ) =

Prob ( -2.54 < z < 0.14) =

Prob ( z < 0.14) - Prob (  z< -2.54) =

0.550127

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LiRa [457]

Answer: 545,846,230

Step-by-step explanation: To round 545,846,229 to the nearest ten, we first find the digit in the rounding place which in this case is 2 in the tens place.

Next, look at the digit to the right of the rounding place which in this case is 9. The rules of rounding tell us that if the digit to the right of the rounding place is less than 5, we round down but if the digit to the right of the rounding place is greater than or equal to 5, we round up.

In this problem, since 9 is greater than or equal to 5, we round up. This means we add 1 to the digit in the rounding place so 2 becomes 3 and we change all digits to the right of the rounding place to 0.

Therefore, 545,846,229 rounded to the nearest 10 is 545,846,230.

3 0
3 years ago
find the amount of an annuity that consist of 26 monthly payments of $100 each into an account that pays 4% interest per year, c
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3 years ago
Find an equation of a line parallel to y=-x-2 and passes through the point (2,-2). Write answer form y=mx+b
tangare [24]
To be parallel, this new line has to have the same slope as the other. To find the slope, we look at the number multiplying x.

-x means x is being multiplied by -1, so the slope, or m, is -1.

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Now, input the coordinate point and solve for b.

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5 0
4 years ago
Read 2 more answers
What is 69x420+77-1x44
zheka24 [161]

Answer:

29013

Step-by-step explanation:

Do PEMDAS.  Multiply 69 and 420 and 1 and 44.  Then you will get 28980+77-44.  Then add and subtract from there.  Answer is 29,013.

4 0
3 years ago
The exchange rate at a post office is £1 = 1.17 euros <br><br> how many euros will u get for £280
Sati [7]

Answer:

327.6 €

Step-by-step explanation:

you can solve with an equation

1£ : 1.17€ = 280£ : x

1 : 1.17 = 280 : x

x = 1.17 * 280 : 1

x = 327.6

-------------------

check

1 : 1.17 = 280 : 327.6

0.85 = 0.85

the answer is good

------------------------------------

or you can simpy solve with a multiplication

280 * 1.17 = 327.6

8 0
3 years ago
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