A toy store needs to make 800 toys to sell during the holidays. Three hundred seventy-two toys have already been made. By late a
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The confidence interval for mean of the "before-after" differences is
Further explanation:
Find the difference between the before pain and the after pain.
Difference = before-after
Kindly refer to the Table for the difference of between the before and after pain.
Sum of difference =
Total number of observation =
Mean of difference =
Sample standard deviation =
Level of significance =
Formula for confidence interval =
confidence interval =
confidence interval =
From the t-table.
The value of =
Confidence interval =
Confidence interval =
Confidence interval =
Confidence interval =
The confidence interval tells us about that
chances of the true mean or population mean lies in the interval.
Yes, the hypnotism appear to be effective in reducing pain as confidence interval include includes the positive deviation from the mean.
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Answer Details:
Grade: College Statistics
Subject: Mathematics
Chapter: Confidence Interval
Keywords:
Probability, Statistics, Speed dating, Females rating, Confidence interval, t-test, Level of significance , Normal distribution, Central Limit Theorem, t-table, Population mean, Sample mean, Standard deviation, Symmetric, Variance.
