Question

A company did a survey among 100 customers to find their car preferences. The customers were asked about their preferences for sedans or hatchbacks. Out of the total 25 people who liked sedans, 15 also liked hatchbacks. There were 40 people who liked hatchbacks.

Part A: Summarize the data by writing the values that the letters A to I in the table below represent. (5 points)

Like sedans Do not like sedans Total
Like hatchbacks A B C
Do not like hatchbacks D E F
Total G H I

Part B: What percentage of the survey respondents did not like either sedans or hatchbacks? (3 points)

Part C: Do the survey results reveal a greater dislike for sedans or hatchbacks? Justify your answer. (2 points)

(10 points)


3.
(06.07 HC)
A coach is assessing the correlation between the number of hours spent practicing and the average number of points scored in a game. The table below shows the data:

Number of hours spent practicing
(x) 0 0.5 1 1.5 2 2.5 3 3.5 4
Score in the game
(y) 5 8 11 14 17 20 23 26 29

Part A: Is there any correlation between the number of hours spent practicing and the score in the game?Justify your answer. (4 points)

Part B: Write a function which best fits the data. (3 points)

Part C: What does the slope and y-intercept of the plot indicate? (3 points)

(10 points)

Answer 1

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