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Earl runs 60 meters in 40 seconds. How many meters per second does Earl run?
1 answer:
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Answer:
[300.202 , 329.798]
Step-by-step explanation:
The 95% confidence interval is given by the interval
where
<em>is the sample mean </em>
<em>s is the sample standard deviation </em>
<em>n is the sample size (n = 7) </em>
is the 0.05 (5%) upper critical value for the Student's t-distribution with 6 degrees of freedom (sample size -1), which is <em>an approximation to the Normal distribution for small samples (n<30).</em>
Either by using a table or the computer, we find
and our 95% confidence interval is