Assume that human body temperatures are normally distributed with a mean of 36.4C and a standard deviation of 0. If we define a fever to be a body…

Assume that human body temperatures are normally distributed with a mean of 36.4°C and a standard deviation of 0.7°C. If we define a fever to be a body temperature above 38.0°C.

(i) 1.1% of normal and healthy persons would be considered to have a fever.

(ii) This suggests that a cut-off of 38.0°C is appropriate.

Question 12 options:

(i) and (ii) are correct statements.

(i) is a correct statement but not (ii).

(ii) is a correct statement but not (i).

(i) and (ii) are false statements.

From past history, the scores on a statistics test are normally distributed with a mean of 70% and a standard deviation of 5%. To earn a “C” on the test, a student must be in the top 25% of the class. What should a student score to receive a “C”?

Question 9 options:

77.21

73.37

73.96

76.90

From past history, the scores on a statistics test are normally distributed with a mean of 70% and a standard deviation of 5%. To earn an “A” on the test, a student must be in the top 5% of the class. What should a student score to receive an “A”?

Question 10 options:

80.84

75.49

78.2

76.90