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just olya [345]
3 years ago
8

The standard deviation of a population is 2.8. What is the margin of error?

Mathematics
2 answers:
lawyer [7]3 years ago
8 0

Answer:

THE ANSWER IS 5.6! Just ttook the test

Step-by-step explanation:

Leno4ka [110]3 years ago
6 0
Plz give me some w
Options
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6 helppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
jeka94
A) 15
B) 4
C) 225
D) 450
8 0
3 years ago
Read 2 more answers
X
Simora [160]

Using it's formula, it is found that the mean of the discrete random variable is given by:

B. 30.47.

<h3>What is the mean of a discrete distribution?</h3>

The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.

Hence, considering the table, the mean of the discrete distribution is:

E(X) = 23 x 0.16 + 25 x 0.09 + 26 x 0.18 + 31 x 0.12 + 34 x 0.24 + 38 x 0.21 = 30.47.

Hence option B is correct.

More can be learned about the mean of a discrete random variable at brainly.com/question/26660401

#SPJ1

4 0
2 years ago
Sue Mitchell weighed 8 lb. 13 oz. when she was born. She now weighs 93 lb. 5
ra1l [238]

Answer:

Weight gain = 84 lb 5 oz

Average weight gain = 6 lb 5 oz

Step-by-step explanation:

lb means pounds

16 oz = 1 pound

Convert the weight to pounds

Weight when she was born = 8 lb. 13 oz

= 8 pounds + 0.8125 pounds

= 8.8125 pounds

Present weight = 93 lb. 5

oz

= 93 pounds + 0.3125 pounds

= 93.3125 pounds

How much has she gained since birth

Weight gain = Present weight - Weight when she was born

= 93.3125 pounds - 8.8125 pounds

= 84.5 pounds

= 84 lb 5 oz

Weight gain = 84 lb 5 oz

what has been her average weight for each year if she is 13 year old

Average weight gain = Weight gain / 13

= 84.5 pounds / 13

= 6.5 pounds

= 6 lb 5 oz

Average weight gain = 6 lb 5 oz

8 0
2 years ago
Simplify <br> 12a-(4b+4a)-b
lara31 [8.8K]
12a-(4b+4a)-b
12a-4b-4a-b
=> 8a-5b
8 0
3 years ago
Read 2 more answers
What is the measure of Angle P Q R?
julsineya [31]
55 degrees is the answer
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2 years ago
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