250 students in a math class take the final exam. The scores on ...

[Alygatorr01285]

Question 1

250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean μ = 75 and standard deviation σ = 10.

The number of students scoring 75 points or more is approximately
◦ 83.
◦ 125.
◦ 158.
◦ 75.
◦ none of these

Question 2

250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean μ = 75 and standard deviation σ = 10.

The average score on the exam was approximately
◦ 75.
◦ 95.
◦ 10.
◦ 85.
◦ none of these

[ktidd]

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Only 31% of students answer this correctly

[sheilaspns]

Question 1

250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean μ = 75 and standard deviation σ = 10.

Assuming there were no outliers, the lowest score on the exam was around
◦ 75.
◦ 0.
◦ 10.
◦ 45.
◦ none of these

Question 2

250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean μ = 75 and standard deviation σ = 10.

Approximately what percent of the students scored between 65 and 75 points?
◦ 68%
◦ 95%
◦ 34%
◦ 10%
◦ none of these

[bigsis44]

Answer 1

45.

Answer 2

34%

[nenivikky]

250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean μ = 75 and standard deviation σ = 10.

Peter's score on the exam places him in the 16th percentile of the class. Peter's score on the exam is approximately
◦ 55.
◦ 65.
◦ 45.
◦ 16.
◦ none of these

[cpetit11]

65.

[Anajune7]

250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean μ = 75 and standard deviation σ = 10.

Carol scored 85 points on the exam. In approximately what percentile of the class does this score place her?
◦ 68th percentile
◦ 34th percentile
◦ 84th percentile
◦ 95th percentile
◦ none of these

[soda0602]

84th percentile

[xroflmao]

Question 1

250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean μ = 75 and standard deviation σ = 10.

Approximately how many students had test scores between 68.25 and 85?
◦ 85
◦ 147
◦ 107
◦ 188
◦ none of these

Question 2

250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean μ = 75 and standard deviation σ = 10.

Approximately how many students had test scores between 65 and 81.75?
◦ 147
◦ 204
◦ 125
◦ 85
◦ 181

[Mochi]

Answer 1

147

Answer 2

147