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Aleksandr-060686 [28]
3 years ago
8

What is 14.1% of the 132 mL rounded to the nearest 10th

Mathematics
1 answer:
Anastasy [175]3 years ago
5 0
132 x 14.1% = 18.612


So 18.612 rounded to 18.6
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Production of a gas flow meter takes place in two distinct operations. Measurements (n = 15) of the time required for the first
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Answer:

a) P(a > 80) = 0.323

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c) The 95% confidence interval expresses that the mean of the distribution can always be found in the given range, with a 95% confidence level.

Step-by-step explanation:

X ~ (45, 4)

Y ~ (32, 2.5)

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We need to obtain the margin of error

Margin of error = (critical value) × (standard error of the sample)

Critical value for a 95% confidence interval = critical value for a significance level of 5% = t(15-1, 0.05/2) = 2.145 (using the t-score since information on the population mean and standard deviation isn't known)

Standard error for the sample of sum of times = (standard deviation of the sum of times)/√n = (6.5/√15) = 1.678

Margin of error = 2.145 × 1.678 = 3.60

Limits of the confidence interval = (Sample mean ± margin of error)

Lower limit of the confidence interval = (Sample mean - margin of error) = 77 - 3.60 = 73.40

Upper limit of the confidence interval = 77 + 3.60 = 80.60

The confidence interval = (73.40, 80.60)

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