You own two small gift shops, one in City A and one in City B. You are interested in which city spends more on Valentine's day gifts. So you test the claim that the mean amount spent in City A is less than the mean amount spent in City B You wish to test the claim that the mean amount spent in City A is less than the mean amount spent in City B at a significance level of a = 0.05. You obtain the following two samples of data from each city. Each data point is the amount of a Valentine's Day gift purchase. City A City B 82.6 82.0 62.8 75.0 64.4 48.0 76.6 63.6 96.3 40.7 55.0 57.7 71.6 82.8 75.3 60.4 73.2 62.9 53.8 45.8 59.2 36.6 46.7 TTT TTT
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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