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(See Solution) Alcohol in wine. The alcohol content of wine depends on the grape variety, Way in which the wine is produced from the grapes, the weather,

Question: Alcohol in wine. The alcohol content of wine depends on the grape variety, Way in which the wine is produced from the grapes, the weather, and other influences. Here are data on the percent of alcohol in wine produced from the same grape variety in the same year by 48 winemakers in the same region of Italy:

  1. Make a histogram of the data, using class width 0.25. The shape of the distribution is a bit irregular, but there are no outliers or strong skewness. Thot no reason to avoid use of \(t\) procedures for \(n=48\).
  2. Give a \(95 \%\) confidence interval for the mean alcohol content of wine type.

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