Stats quiz 3.2 review

Scores on a test follow a normal distribution with mean 82 and standard deviation 6. Between what values are the middle 95% of scores?

• 70 and 94

• 76 and 88

• 64 and 100

• 70 and 88

Tags

CCSS.HSS.ID.A.4

Scores on a test follow a normal distribution with mean 82 and standard deviation 6. What percent of students scored better than 88?

• 84%

• 16%

• 2.5%

• 34%

Tags

CCSS.HSS.ID.A.4

Scores on a test follow a normal distribution with mean 82 and standard deviation 6. What percent of students score less than 70.

• 0.15%

• 2.35%

• 2.5%

• 16%

Tags

CCSS.HSS.ID.A.4

Scores on a test follow a normal distribution with mean 82 and standard deviation 6. What percent of students scored between 76 and 94?

• 47.5%

• 68%

• 97.5%

• 81.5%

Tags

CCSS.HSS.ID.A.4

Females have an average height of 64 inches with a standard deviation of 3 inches. Assume the data follows a normal distribution. Between what values does the middle 97.5% of females lie?

• 55 and 73

• 61 and 67

• 58 and 70

• 52 and 76

Tags

CCSS.HSS.ID.A.4

Females have an average height of 64 inches with a standard deviation of 3 inches. Assume the data follows a normal distribution. What percent of females have a height less than 67 inches?

• 16%

• 84%

• 68%

• 95%

Tags

CCSS.HSS.ID.A.4

Females have an average height of 64 inches with a standard deviation of 3 inches. Assume the data follows a normal distribution. What percent of females have a height greater than 73 inches?

• 2.5%

• 2.35%

• 0.15%

• 99.7%

Tags

CCSS.HSS.ID.A.4

Females have an average height of 64 inches with a standard deviation of 3 inches. Assume the data follows a normal distribution. What percent of females have a height between 58 inches and 73 inches?

• 84%

• 87.85%

• 99.7%

• 97.5%

Tags

CCSS.HSS.ID.A.4

Scores on a test follow a normal distribution with mean 82 and standard deviation 6. How many students scored better than 88 if 300 students took the exam?

• 48 students

• 252 students

• 102 students

• 84 students

Tags

CCSS.HSS.ID.A.4

Females have an average height of 64 inches with a standard deviation of 3 inches. Assume the data follows a normal distribution. How many females are shorter than 58 inches if there were 600 females?

• 9 students

• 15 students

• 1 student

• 30 students

Tags

CCSS.HSS.ID.A.4