3pi is irrational because it cannot be expressed as a fraction or decimal. The digits after the decimal point in pi continue on forever without a pattern.
7 added to a number, 7 plus a number, 7 and a number, etc. It's written in many ways.
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Answer:
And we are 95% confident that the true mean of chloride concentration is between 0.375 and 0.377 cc/ cubic meter
Step-by-step explanation:
Data provided
represent the sample mean for the chloride concentration
population mean (variable of interest)
s=0.0012 represent the sample standard deviation
n=15 represent the sample size
Confidence interval
The confidence interval for the mean is given by the following formula:
(1)
Since we need to find the critical value first we need to begin finding the degreed of freedom
The Confidence is 0.95 or 95%, the significance would be
and
, and the critical value for this case with a t distribution with 14 degrees of freedom is
And the confidence interval is:
And we are 95% confident that the true mean of chloride concentration is between 0.375 and 0.377 cc/ cubic meter
Answer:
divided by 3 12/30 = 4/10 = 2/5
Step-by-step explanation:
Answer:
what in the holy-
Step-by-step explanation: