Dave the jogger runs the same route every day (about 2.2 miles)
tutor4helpyou (Not rated)
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Dave the jogger runs the same route every day (about 2.2 miles). On 18 consecutive days, he recorded the number of steps using a pedometer. The results were
3,450 | 3,363 | 3,228 | 3,360 | 3,304 | 3,407 | 3,324 | 3,365 | 3,290 |
3,289 | 3,346 | 3,252 | 3,237 | 3,210 | 3,140 | 3,220 | 3,103 | 3,129 |
a) Construct a 95% confidence interval for the true mean number of steps Dave takes on his run. (Round your answers to 4 decimal places.)
b) What sample size would be needed to obtain an error of ± 20 steps with 95% confidence? (Enter your answer as a whole number (no decimals). Use a z-value taken to three decimal places in your calculations.)
SHOW THE WORK IF POSSIBLE. I know the mean is 3278.7222 and the standard deviation is 97.0535.
11 years ago
Answer for: Dave the jogger runs the same route every day (about 2.2 miles)
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