Emily read an article that stated that on average 15% of men are left-handed and 9% of women are left-handed. Emily gathered her own data by surveying adults at a basketball game. She found that 5 out of 26 women were left-handed. What is the approximate difference in percentage between the study's findings and Emily's experimental results? (8.11)(B)

Objective 5: Probability And Statistics

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Objective 5: Probability And Statistics - Quiz

Try your best on these questions related to Objective 5 for the STAAR exam.
Notice that each question is labeled with the appropriate TEKS number/letter.
You can review specific TEKS by number/letter on a link on my website.
Good luck.

Questions and Answers

1.

Which scatter plot shows the relationship between the number of gallons of gasoline remaining in a motorcycle's tank and the number of miles driven since the tank was filled? (8.12)(B)
- A.
- B.
- C.
- D.
Correct Answer
B.
2.
- A.
  
  The sample does not represent all of the voters in the city.
- B.
  
  The sample size is too large.
- C.
  
  The newspaper surveys are always reliable.
- D.
  
  The data collect is biased.
Correct Answer
A. The sample does not represent all of the voters in the city.
3.
- A.
  
  $500,000
- B.
  
  $450,000
- C.
  
  $400,000
- D.
  
  $350,000
Correct Answer
B. $450,000
4.

A spinner and a fair number cube are used in a game. The spinner has four equal sections; red, blue, yellow, or green. The faces of the cube are numbered 1 through 6. What is the probability of a player spinning the color red and rolling a 5 or 6? (8.11)(A)
- A.
- B.
- C.
- D.
Correct Answer
B.

Explanation
The probability of spinning the color red is 1/4 because there are four equal sections on the spinner. The probability of rolling a 5 or 6 on the number cube is 2/6 because there are two favorable outcomes out of six possible outcomes. To find the probability of both events happening, we multiply the probabilities together: (1/4) * (2/6) = 1/12. Therefore, the probability of a player spinning the color red and rolling a 5 or 6 is 1/12.

Rate this question:
5.
- A.
  
  Win a prize if the product is greater than 17.
- B.
  
  Win a prize if the product is odd.
- C.
  
  Win a prize if the sum is less than 3.
- D.
  
  Win a prize if the sum or the product is 10.
Correct Answer
D. Win a prize if the sum or the product is 10.
6.
- A.
  
  154 degrees
- B.
  
  108 degrees
- C.
  
  30 degrees
- D.
  
  9 degrees
Correct Answer
B. 108 degrees
7.

Emily read an article that stated that on average 15% of men are left-handed and 9% of women are left-handed. Emily gathered her own data by surveying adults at a basketball game. She found that 5 out of 26 women were left-handed. What is the approximate difference in percentage between the study's findings and Emily's experimental results? (8.11)(B)
- A.
  
  4.2%
- B.
  
  6.2%
- C.
  
  10.2%
- D.
  
  19.2%
Correct Answer
C. 10.2%

Explanation
Based on the information provided, the article stated that 9% of women are left-handed on average. However, Emily's survey found that only 5 out of 26 women were left-handed, which is approximately 19.2%. Therefore, the approximate difference in percentage between the study's findings and Emily's experimental results is 19.2% - 9% = 10.2%.

Rate this question:
8.
- A.
  
  Mean
- B.
  
  Median
- C.
  
  Mode
- D.
  
  Range
Correct Answer
B. Median
9.
- A.
  
  Cheese sandwiches were the favorite lunch that day.
- B.
  
  More students ate pizza than soup or veggie burgers.
- C.
  
  Students will eat more veggie burgers than soup the next day.
- D.
  
  Twice as many students ate chicken sandwiches as pizza.
Correct Answer
B. More students ate pizza than soup or veggie burgers.