Refer to the accompanying data table, which shows the amounts of nicotine (mg per cigarette) in king-size cigarettes, 100-mm menthol cigarettes, and 100-mm nonmenthol cigarettes. The king-size cigarettes are nonfitered, while the 100-mm menthol cigarettes and the 100-mm nonmenthol cigarettes are fitered. Úse a 0.05 significance level to test the claim that the three categories of cigarettes yield the same mean amount of nicotine. Given that only the king-size cigarettes are not filtered, do the filters appear to make a difference?
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.
|
King-Size
|
|
100-mm Menthol
|
|
100-mm Nonmenthol
|
|
|||
|---|---|---|---|---|---|---|---|---|
|
Brand
|
Nicotine (mg)
|
|
Brand
|
Nicotine (mg)
|
|
Brand
|
Nicotine (mg)
|
|
|
1
|
1.6
|
|
1
|
1.2
|
|
1
|
0.5
|
|
|
2
|
1.0
|
|
2
|
0.9
|
|
2
|
1.1
|
|
|
3
|
1.0
|
|
3
|
1.2
|
|
3
|
0.5
|
|
|
4
|
1.1
|
|
4
|
0.9
|
|
4
|
1.2
|
|
|
5
|
1.4
|
|
5
|
1.2
|
|
5
|
1.0
|
|
|
6
|
1.1
|
|
6
|
1.4
|
|
6
|
0.8
|
|
|
7
|
1.1
|
|
7
|
0.9
|
|
7
|
1.0
|
|
|
8
|
1.0
|
|
8
|
1.1
|
|
8
|
1.1
|
|
|
9
|
1.4
|
|
9
|
1.2
|
|
9
|
0.8
|
|
|
10
|
1.1
|
|
10
|
0.8
|
|
10
|
0.9
|
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