Probability and statistics ques

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Homework Help Overview

The discussion revolves around calculating a 95% confidence interval for the yield of a chemical process based on data collected over five days of operation. The subject area is probability and statistics, specifically focusing on confidence intervals.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the need for showing effort before receiving help. There are attempts to apply the formula for confidence intervals, with one participant expressing uncertainty about how to calculate variance. Another participant raises questions about the sample mean, sample size, and standard deviation, as well as the appropriate distribution to use.

Discussion Status

The discussion is ongoing, with participants exploring various aspects of the problem. Some guidance has been offered regarding the necessary calculations and considerations for determining the confidence interval, but there is no explicit consensus on the approach yet.

Contextual Notes

Participants note the importance of showing effort in the homework context, which may influence the responses and guidance provided.

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QUES: the yield of a chemical process is bieng studied. the past 5 days of plant operation have resulted in :91.6, 88.75, 90.08, 89.95, 91.3. Find a 95% two-sided confiendce interval. Thanks folks
 
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I don't know the answer.

But, you need to show some of your effort before anyone else going to help you.
 
i tried using the eqautaion "Confiendnce interval on the mean, varaiance known" but i am not sure how to get the variance. thanks
 
Let [tex]\bar{x}[/tex] be the sample mean, what is [tex]\bar{x}[/tex]?
What is n, the sample size?
What is s, the sample standard deviation?
What distribution should you use(based on n)? Then find the 95% confidence interval.
 

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