Using the t-distribution to build the 99% confidence interval, it is found that:
- The margin of error is of 3.64.
- The 99% confidence interval for the population mean is (19.36, 26.64).
<h3>What is a t-distribution confidence interval?</h3>
The confidence interval is:
In which:
- is the sample mean.
- s is the standard deviation for the sample.
The critical value, using a t-distribution calculator, for a two-tailed 95% confidence interval, with 21 - 1 = 20 df, is t = 2.086.
The other parameters are given as follows:
The margin of error is given by:
Hence the bounds of the interval are:
The 99% confidence interval for the population mean is (19.36, 26.64).
More can be learned about the t-distribution at brainly.com/question/16162795
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Answer:
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Step-by-step explanation:
Answer:
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Step-by-step explanation:
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17/5 = 5/5 + 5/5 + 5/5 + 2/5 = 3 + 2/5
<span>The simplest mixed number for 17/5 is 3 2/5.</span>
Answer: 96
Step-by-step explanation: take 12 (1 dozen) and times it by 8
12x8=96