1. A new weight-reduction technique consists of a liquid protein diet, is currently undergoing test by the FDA before its introduction into the market. The weights of a random sample of 7 people are recorded before they are put on this diet for three weeks. At the end of the three-week period, their weights are again recorded (in pounds). weight loss Oifterence Be- Dependent Person Weight before diet Weight after diet 1 154 143 11 198 194 la 3. 191 185 6 4 197 191 199 200 244 248 -4 248 245 3 25=Ed a) Form the column of differences and find the mean and standard deviation of this column of numbers. Show your work. Xイ=d- 25-3,57 %3D ニ s2-(2 -(Sょ)? 235- 35-(25)* | 3D24. %3D (n-1) (7-1) 124.2857134.92805 %3D - Calculate a 90% confidence interval for the difference between the mean weights before and after the diet is used. Show all the work, and then interpret the confidence interval in the context of the problem. 9070 Xd = J= 3.57 S= 4.92805 n= %3D
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.
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