The average reflected light value found for 25 red marbles


Problem:

The average reflected light value found for 25 red marbles is found to be 25.7. It is known the standard deviation for the marble population is 2.9.

Find the 99% confidence interval for available marbles.

Question to answer:

What is the MATLAB command (full and correct syntax) to find the z value needed to solve the problem above (that is zalpha/2 used in the CI formula)?

Do not use spaces in your answer. Do not use unnecessary parentheses in your answer.

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MATLAB Programming: The average reflected light value found for 25 red marbles
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