1. A new weight loss experiment has begun at the University Medical Center in Tucson, Arizona. For this study, balloons would be implemented and inflated in the stomachs of severely obese subjects. The use of the balloon is intended to make the subject's stomach feel full, thus reducing the appetite. Suppose 100 severely obese people were randomly selected to participate in the study for one month. A gastroenterologist predicted that after one month, 10% of the subjects would lose less than 10 pounds, 30% would lose between 10 and 25 pounds and 60% would drop over 25 pounds in the first month. Suppose the actual results were as follows after the experiment was concluded: Weight loss Less than 10 pounds: 15 subjects; 10-25 pounds: 35 subjects Over 25 pounds: 50 subjects Do the data support the gastroenterologist's claim at a =.05? Ho: Test statistic: Conolugion

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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.