A random sample is used to estimate the mean time required for caffeine from products such as coffee or soft drinks to leave the body after consumption. A 95% confidence interval based on this sample is: 5.6 hours to 6.4 hours (for adults).

What is the sample mean (x with bar on top) ?

Question

Mathematics

Priscilla

14 January, 14:29

A random sample is used to estimate the mean time required for caffeine from products such as coffee or soft drinks to leave the body after consumption. A 95% confidence interval based on this sample is: 5.6 hours to 6.4 hours (for adults).

What is the sample mean (x with bar on top) ?

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Answers (1)

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Kolby Franco · Answer 1

The sample mean time required caffeine to leave the body is 6.0 hours.

Step-by-step explanation:

Confidence Interval can be calculated using M±ME where

M is the mean time required for caffeine to leave body ME is the margin of error from the mean

Given 95% confidence interval 5.6 hours to 6.4 hours, we can conclude that

M-ME=5.6

M+ME=6.4

Thus M=6

A random sample is used to estimate the mean time required for caffeine from products such as coffee or soft drinks to leave the body after consumption. A 95% confidence interval based on this sample is: 5.6 hours to 6.4 hours (for adults).What is the sample mean (x with bar on top) ?

A random sample is used to estimate the mean time required for caffeine from products such as coffee or soft drinks to leave the body after consumption. A 95% confidence interval based on this sample is: 5.6 hours to 6.4 hours (for adults).

What is the sample mean (x with bar on top) ?