The circumference of the earth is about 25,000 miles. Approximately how far is it from any point on the earth's surface to its center?
Answers
if the C of earth = 25000 miles
then the r = C ÷ (2π)
= 25,000 miles ÷ 2π
= 12500 ÷ π
≈ 3978.87358 miles
Since radius is a measure of the distance from the center to any point on the circle then that distance would be about 3978.8736 miles
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In a normal distribution, the mean has Standard Score: z =
Answers
Using the normal distribution, it is found that the z-scores are:
1) z = -0.8
2) z = 2.4
3) z = 0
In a normal distribution with mean and standard deviation
, the z-score of a measure X is given by:
- It measures how many standard deviations the measure is from the mean, either above the mean(positive z-score), or below(negative z-score).
Item 1:
0.8 standard deviations below the mean, hence z = -0.8.
Item 2:
2.4 standard deviations above the mean, hence z = 2.4.
Item 3:
The mean is 0 standard deviations from itself, hence z = 0.
A similar problem is given at brainly.com/question/24663213
Final answer:
A standard score (z-score) signifies how many standard deviations a data point is away from the mean. A data value 0.8 standard deviations below the mean has a z-score of -0.8, meanwhile, if it is 2.4 standard deviations above the mean, its z-score is 2.4. The mean in a normal distribution has a z-score of 0.
Explanation:
In the field of statistics, a standard score (also known as a z-score) represents how many standard deviations an element is from the mean. In a normal distribution, a data value located 0.8 standard deviations below the mean has a Standard Score: z = -0.8. This is because the z-score is negative when the data value is below the mean. Conversely, a data value located 2.4 standard deviations above the mean has a Standard Score: z = 2.4. As the data value is above the mean, the z-score is positive. Finally, for the mean value itself in a normal distribution, the Standard Score: z = 0 because the mean value is the center of distribution, hence no deviation from itself.
Learn more about Standard Score here:
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Answers
multiply 4 on both sides
96=3r
divide 3r and 96 by 3
r=32
Answers
Answer:486
Step-by-step explanation:
(Multiply by 3 each time ;))
Hope this helped!
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Answer:
multipl each 3 times
Step-by-step explanation:
Answers
Answer:
Piano fits in the given space.
Step-by-step explanation:
Given: Length of Piano =
Length of Space 5 foot
To find: If piano fits in the space or not
Piano fits in the space if its length is less than length of space .i.e., 5 foot
length of piano = feet
feet is just plural of foot
So, conversion of unit not needed
Length of piano is improper fraction ( fraction whose numerator is gretaer than denominator ) So, it ca be expressed in mixed fraction.
This shows that Piano's length is more than 4 but less than 5.
Therefore, Piano fits in the given space.
Answers
A = P (1 + r/n)ⁿˣ
A = the future value = $ 20,000
P = the principal investment amount = Not given
r = the annual interest rate (decimal) = 0.06
n = the number of times that interest is compounded per year = 12
x = the number of years = 10
$ 20,000 = P (1 + 0.06/12)¹²⁰
$ 20,000 = P (1 +0.005 )¹²⁰
$ 20,000 = P (1.005 )¹²⁰
$ 20,000 = 1.81·P
P = $ 20,000÷1.81
P = $ 11,049.72