asked 163k views
2 votes
The confidence interval on estimating the heights of students is given as (5.4, 6.8). Find the sample mean of the confidence interval. A.6.8B.6.1C. 5.4D. 0.7

asked
User Wavicle
by
8.8k points

1 Answer

3 votes

Solution

- The formula for finding the sample mean from the confidence interval is given below


\begin{gathered} \text{Given the Confidence interval,} \\ (A_1,A_2) \\ \\ \therefore\operatorname{mean}=(A_1+A_2)/(2) \end{gathered}

- Thus, we can find the sample means as follows


\begin{gathered} A_1=5.4 \\ A_2=6.8 \\ \\ \therefore\operatorname{mean}=(5.4+6.8)/(2) \\ \\ \operatorname{mean}=(12.2)/(2) \\ \\ \operatorname{mean}=6.1 \end{gathered}

Final Answer

The sample mean is 6.1 (OPTION B)

answered
User Cary Jensen
by
7.7k points

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