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MatroZZZ [7]
4 years ago
9

In a normal distribution, what percentage of the data falls within 3 standard deviations of the mean?

Mathematics
1 answer:
Stells [14]4 years ago
4 0
99% using the 68- 95- 99 rule
For these kind of problems, it is always a good idea to just draw out a normal distribution curve.
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Paul get 5$ week for doing his chores he is saving his money to buy a skateboard that cost 85$ he has already saved 5$
TiliK225 [7]

Answer:

16 weeks

Step-by-step explanation:

85 divided by 5 is 17. Take away one week for the $5 he already has. So you get 16 weeks.

Hope this helps you!

6 0
3 years ago
What is the equivalent expression for the expression 2 1/3
bija089 [108]

Answer: 2+1/3

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The distance between dchool a and school b is 360 kilometers away If a bus leaves school. A at 9 30. And reaches school b at 230
Degger [83]

Answer:

v = 72 km/h

Step-by-step explanation:

Given that,

The distance between school a and b is 360 km.

A bus leaves school a at 9:30 and reaches school b at 2:30

Total time, t = 5 hours

We know that, the speed of an object is equal to the total distance divided by total time taken.

So,

v = d/t

v=\dfrac{360\ km}{5\h}\\\\v=72\ km/h

So, the required speed is 72 km/h.

7 0
3 years ago
Lucy bought 512 of a pound of candy. Greta bought 312 of a pound of candy. Which equation correctly represents the total weight
lyudmila [28]

Answer:

824 punds of candy

Step-by-step explanation:

512 + 312

Total means together and adding. You would add the 2 numbers and get our answer.

8 0
3 years ago
The fox population in a certain region has a continuous growth rate of 7 percent per year. It is estimated that the population i
rjkz [21]

Answer:

P(t) = 14300e^0.07t

Step-by-step explanation:

Let :

Population as a function of years, t = P(t) ;

Growth rate, r = 7%

Estimated population on year 2000 = Initial population = 14300

The given scenario can be modeled using an exponential function as the change in population is based in a certain percentage increase per period.

P(t) = Initial population*e^rt

P(t) = 14300*e^(0.07t)

P(t) = 14300e^0.07t

Where, t = number of years after year 2000.

7 0
3 years ago
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