Answer:
The treatments (new menu item) were not randomly assigned to the students - option B.
Step-by-step explanation:
A choice was given to each student to select between the macaroni and cheese and the Cajun potato barrels. Therefore, the treatments were not randomly assigned to the students, and students who prefer their food will select that item and give high ratings. Hence, the study suffers from selection bias.
The reason below prevents this study from being a well-designed experiment;
The treatments (new menu item) were not randomly assigned to the students - option B.
Answer:
<u>Aaron played 4 games and went on 2 rides at the carnival.</u>
Step-by-step explanation:
1. Let's review the information provided to us to answer the question correctly:
Cost of each game = US$ 2.75
Cost of each ride = US$ 4.75
Total spent by Aaron at the carnival = US$ 20.50
Number of rides = x
Number of games = 2x (the number of games he played is twice the number of rides he went on)
2. Determine the number of games Aaron played and the number of rides Aaron went on.
For determine the number of games and the number of rides, we will use the following equation:
2.75 (2x) + 4.75x = 20.50
5.5x + 4.75x = 20.50
10.25x = 20.50
x = 20.50/10.25
x = 2 ⇒ 2x = 4
<u>Aaron played 4 games and went on 2 rides at the carnival.</u>
(1.04)^4 = 1.1699
so the correct choice is the third one.
Answer:
-2
Step-by-step explanation: