What number of students describes the first quartile?
20, 18, 21, 18, 22, 24, 18, 23, 23, 24,

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Ответ:

jakepeavy70

27.02.2020

Mathematics

90% Confidence Interval for the actual average weight of purses.

(4.7412 , 5.2588)

Step-by-step explanation:

Explanation:-

Given sample size 'n' = 60

mean of the sample x⁻ = 5 pounds

Standard deviation of the sample 'S' = 1.2 pounds

Level of significance = 0.10

90% Confidence Interval for the actual average weight of purses.

$(x^{-} - t_{\frac{\alpha }{2} } \frac{S}{\sqrt{n} } , x^{-} +t_{\frac{\alpha }{2} } \frac{S}{\sqrt{n} } )$

$(5 - 1.6711\frac{1.2}{\sqrt{60} } , 5 +1.671\frac{1.2}{\sqrt{60} } )$

( 5 - 0.2588 , 5 + 0.2588)

90% Confidence Interval for the actual average weight of purses.

(4.7412 , 5.2588)

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What number of students describes the first quartile? 20, 18, 21, 18, 22, 24, 18, 23, 23, 24,

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What number of students describes the first quartile?
20, 18, 21, 18, 22, 24, 18, 23, 23, 24,