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Ronch [10]
3 years ago
12

Am I correct if not please help me

Mathematics
1 answer:
vesna_86 [32]3 years ago
4 0
You are correct Chloe Karus
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Suppose the speeds of vehicles traveling on a highway are normally distributed and have a known population standard deviation of
erik [133]

Answer:

2.88

Step-by-step explanation:

Data provided in the question

\sigma = Population standard deviation = 7 miles per hour

Random sample = n = 32 vehicles

Sample mean = \bar X = 64 miles per hour

98% confidence level

Now based on the above information, the alpha is

= 1 - confidence level

= 1 - 0.98

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For \alpha_1_2 = 0.01

Z \alpha_1_2 = 2.326

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= 2.326 \times \frac{7}{\sqrt{32}}

= 2.88

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3 years ago
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Sidana [21]

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How do solve this problem 2/3 (2/8 + 4/8) =
scoundrel [369]

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Step-by-step explanation:

2/3 (2/8 + 4/8) =

First simplify what is inside the parentheses

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2/3 (6/8) =

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allochka39001 [22]

Answer:

Step-by-step explanation:

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This cannot be solved unless you are more specific

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