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melisa1 [442]
2 years ago
12

TRUE OR FALSE

Mathematics
1 answer:
Yanka [14]2 years ago
7 0

Answer:

TRUE

Step-by-step explanation:

GIVE ME BRAINLIEST

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Length width height equals to 62, what is the maximum volume
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3 years ago
What is the vertex and the equation of the axis of symmetry of the graph of y=x2-6x-7?
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3 0
3 years ago
Read 2 more answers
the Wall Street Journal reported that automobile crashes cost United States $162 billion annually. The average cost per person f
Tanya [424]

Answer:

a) Margin of error = 166.311

b) sample size ≥ 62

Step-by-step explanation:

Given:

Average cost = $1599

Sample size = 50 persons

Standard deviation = $600

Confidence level is 95%

a) Margin of error = z\frac{\sigma}{\sqrt{n}}

Now for confidence level of 95% z-value = 1.96

Thus,

Margin of error = 1.96\frac{600}{\sqrt{50}}

or

Margin of error = 166.311

b) For Margin of error ≤ 150

z\frac{\sigma}{\sqrt{n}} ≤ 150

or

1.96\frac{600}{\sqrt{n}} ≤ 150

or

1.96\frac{600}{150} ≤ √n

or

√n ≥ 7.84

or

n ≥ 61.4656

Therefore,

sample size ≥ 62

6 0
3 years ago
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