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Elementary Statistics a Step by Step Approach
8 months, 3 weeks ago
Hi I'm David and I'm here to have you answered your question. Now let me bring up your question here in the question we want to discuss about the continent of our founder. Mean, let me remind you that the confidence interval from the mean, it will be the expo plus and minus Z. And for our due time sigma I was going to end In this question here were given December and equal to the 16. And the sample mean expert equal June 100, The Standard Division Sigma Equal to the 37. And the question asked me to find the 99% company interval. Notice that from the formula we had to find it Critical Volusia virtue. Now with the 99% confident of all And far it would equal to the one And therefore and for I would to equal to the 0.5 Are equal to 0.05. They will look at the Z on the Zap on 005 We see the value equal to the 2.575. And therefore we would have the 99% confidence interval, find a meal, it will be X bar plus minus Zn 4/2 and then times sigma will be 37 on the square root on the sixth day. If you compute the value on the right We have the 2.575 Times 37 The Valium A Square Root of 16 You go to the 12.2999 And if we use the minus we will have 100- the answer. It will echo to the 87.7 zero. And if we use the plus, we have the 112.2999. The question asking around to the one decimal places So that for the answer it will be lower limit equal during the 87.7, Upper limit equal to 112.3. And this could be the answer to this question.
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