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ANEK [815]
3 years ago
11

PLZ HELP 3 MINUTES LEFT WIL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Softa [21]3 years ago
7 0

Answer:

question where it at ㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤㅤ ㅤㅤ ㅤ ㅤ ㅤ ㅤ

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The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The
zavuch27 [327]

The standard deviation of the frequency distribution is 5.54

<h3>How to determine standard deviation?</h3>

The table of values is given as:

x     f(x)

0-3 13

4-7  13

8-11 10

12-15 11

16-19 0

20-23 3

Rewrite the table by calculating the class midpoints:

x     f(x)

1.5 13

5.5  13

9.5 10

13.5 11

17.5 0

21.5 3

Start by calculating the mean using:

\bar x = \frac{\sum fx}{\sum f}

This gives

\bar x = \frac{1.5 * 13 + 5.5 * 13 + 9.5 * 10 + 13.5 * 11 + 17.5 * 0 + 21.5 * 3}{13 + 13 + 10 + 11 + 0 +3}

Evaluate

\bar x = 7.98

The standard deviation is then calculated as:

\sigma = \sqrt{\frac{\sum f(x - \bar x)^2}{\sum f }}

So, we have:

\sigma= \sqrt{\frac{13 * (1.5 - 7.98)^2 + 13  * (5.5 - 7.98)^2 + (9.5 - 7.98)^2 * 10 + (13.5 - 7.98)^2 * 11 + (17.5 - 7.98)^2 * 0 + (21.5 - 7.98)^2 * 3}{13 + 13 + 10 + 11 + 0 +3}}

Evaluate

\sigma= \sqrt{30.6496}

Solve

\sigma= 5.54

Hence, the standard deviation is 5.54

Read more about standard deviation at:

brainly.com/question/15858152

#SPJ1

7 0
1 year ago
Please help pre algebra 8th grade
otez555 [7]

Answer:

28 degrees

Step-by-step explanation:

152 is the exact same measure as angle 2.

To get to 180 you have to add 152 + angle 1

Angle one is the same as angle 3.

180 - 152 = 28

Hope this helps

5 0
3 years ago
Show an equation to find out how many milliliters are in 3.4 L
Allisa [31]

Answer:

3,400 ml

Step-by-step explanation:

Conversion factor: 1000

2) mL = L * 1000

3) mL = 3.4 * 1000

4) mL = 3400

3 0
3 years ago
Two friends start at the same point. they walk in opposite directions for 3 meters, then turn left and walk another 3 meters. th
vladimir2022 [97]
3^2+3^2=18
√ 18 + √18=2√18 or 6√2 meters
They are 6√2 meters apart or approximately 8.49 meters.
3 0
3 years ago
F(x)=3x graphed give answer
BaLLatris [955]

Answer:

Step-by-step explanation:

7 0
3 years ago
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