To find the average of something you add up all the numbers and divide by how many there are.
10+15+20+11+8+12+5+18+29+32=160
160/10=16
Answer: The average flow time was 16 minutes.
Answer:
a) 68%
b) 99.7%
c) 95%
Step-by-step explanation:
The mean height for an 8th grader in the State of Florida is 146 cm with a standard deviation of 8 cm. Given a normal distribution, use the Empirical Rule to interpret the data.
Empirical rule states that:
68% of data falls within 2 standard deviations from the mean - between μ – σ and μ + σ .
95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ .
Mean = 146
Standard deviation = 8cm
a) What percent of 8th graders heights are between 138 cm and 162 cm?
146 - sx = 138cm
146 - 138 cm = 8cm
146 - 162 cm = 8cm
Hence,68% of data falls within 2 standard deviations from the mean - between μ – σ and μ + σ .
b) What percent of 8th graders heights are between 122 cm and 170 cm?
Standard deviation = 8
146 - 122 = 24 cm
146 - 170 = -24cm
24cm/8 cm = 3
Hence,99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ .
c) What percent of 8th graders heights are between 130 cm and 162 cm?
146 cm - 130cm = 16cm
162 cm - 146 cm = 16 cm
16cm/8cm
= 2
Hence, 95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
Answer:
3?
Step-by-step explanation:
Answer:
Sky blue
Step-by-step explanation:
30*2 is 60 (diameter)*pi is 188.4
20*2 is 40 (diameter)*pi is 62.8
I got 125.6 but the 1,256 is the closest one to it, (also did you actually post a quizizz on brainly -_- smh)
The difference between constructing a square and constructing a regular hexagon is A. The diameter of the circle is used for the square construction, but the radius of the circle is used for the regular hexagon construction.
<h3>What is a square?</h3>
A square is a regular quadrilateral in Euclidean geometry, which means it has four equal sides and four equal angles. It can also be defined as a rectangle with two adjacent sides of equal length.
A regular hexagon is a polygon with six equal sides and six equal angles. All of the sides and angles of a regular polygon are equal.
In conclusion, the correct option is A.
Learn more about square on:
brainly.com/question/25092270
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