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melamori03 [73]
3 years ago
11

Jennifer, Kate, and Lucy line up in random order for basketball practice. What is the probability that the girls will line up fr

om front to back in alphabetical order of their names?
A• 1/3
B• 1/6
C• 2/3
D• 1/4
Mathematics
1 answer:
GarryVolchara [31]3 years ago
7 0

Answer:

1/6, because there is only one way it's possible and there are 6 outcomes.

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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A population is known to be normally distributed with a standard deviation of 2.8. (a) Compute the 95% confidence interval on th
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Answer:

Step-by-step explanation:

Mean = sum of terms/number of terms

The mean of the given sample is

(8 + 9 + 10 + 13 + 14 + 16 + 17 + 20 + 21)/9 = 14.2

a)

For a confidence level of 95%, the corresponding z value is 1.96.

We will apply the formula

Confidence interval

= mean ± z ×standard deviation/√n

Where

n represents the number of samples

It becomes

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b)

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We will apply the formula

Confidence interval

= mean ± z ×standard deviation/√n

Where

n represents the number of samples

It becomes

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= 14.2 ± 2.58 × 0.933

= 14.2 ± 2.4

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The upper end of the confidence interval is 16.6

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