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neonofarm [45]
3 years ago
8

What is the interquartile range for this set of data? 11, 19, 35, 42, 60, 72, 80, 85, 88 A) 30 B) 55.5 C) 60 D) 72

Mathematics
2 answers:
Nostrana [21]3 years ago
6 0
The answer is B) 55.5 Do you need me to work it out for you?
balandron [24]3 years ago
3 0
I think it's B. :) good luck
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50 percent of 620 written as a percent
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A machine used for packaging seedless golden raisins is set so that their standard deviation in the weight of raisins packaged p
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Answer:

population standard deviation does not differ from 0.25

Step-by-step explanation:

The hypothesis :

σ² = 0.25²

σ² ≠ 0.25²

The Chisquare statistic, χ²: (n-1)*s²/σ²

Where s² = sample variance ; sample size, n = 30

Using calculator, the sample variance, s² = 0.1646

χ² = (n-1)*s²/σ²

χ²: (30 - 1) * 0.1646 / 0.25²

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χ² = 0.3292 / 0.0625

χ² = 5.2672

α = 0.05

Using the Pvalue from Chisquare calculator ; df = 29

Pvalue = 1

Since, Pvalue > α ; We fail to reject the null and conclude that population standard deviation does not differ from 0.25

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