Alcohol in wine. The alcohol content of wine depends on the grape variety, the 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. It is known that the expected content should be 12% a) Plot each data set in Histogram to investigate the shape of the distributions and explain the what you see. (Hint: Try using bin range of 0.25) Explanation b) Set up the Null and Alternative Hypothesis (95% Confidence) Null Hypothesis Alternative Hypothesis c) What are the df (degrees of Freedom)? d) What is the p-value (Show you work on how you got it). e) Determine the Confidence Interval ay 95%. f) Based on your confidence interval, is the mean alcohol content significantly different at the a = 0.05 level from 12%? Explanation g) Based on your confidence interval, is the mean alcohol content significantly different at the a = 0.05 level from 13%? Explanation

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Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.