Q. A teacher gave a 25 question multiple choice test. After scoring the tests, she computed a mean and standard deviation of the scores. The standard deviation was 0. Based on this information
A. all the students had the same score. B. she must have made a mistake. C. about half the scores were above the mean.
Q. The five-number summary of scores on a test is 35 60 65 70 90
Based on this information
A. there are no outliers. B. there are low outliers. C. there are both high and low outliers.
Q. High levels of glucose in the blood are indications of diabetes, which is becoming more prevalent in the United States. Diabetes can lead to many complications such as blindness and heart disease. A random sample of 180 individuals had their blood sugar level measured. The five-number summary was
52 79 91 119 220
Q. How many of the people in the sample had glucose levels above 119?
A. 25 B. 135 C. 45
Q. Too much cholesterol in the blood increases the risk of heart disease. The cholesterol levels of young women aged 20 to 34 vary approximately Normally with mean 185 milligrams per deciliter (mg/dl) and standard deviation 39 mg/dl. About what percent of young women in this age group will have cholesterol levels less than 150 mg/dl?
A. 90% B. 18.5% C. 81.5%
Q. Too much cholesterol in the blood increases the risk of heart disease. The cholesterol levels of young women aged 20 to 34 vary approximately Normally with mean 185 milligrams per deciliter (mg/dl) and standard deviation 39 mg/dl. Cholesterol levels for middle-aged men vary Normally with mean 222 mg/dl and standard deviation 37 mg/dl. Sandy is a young woman with a cholesterol level of 220. Her father has a cholesterol level of 250. Who has relatively higher cholesterol?
A. Sandy B. Sandy's father C. Impossible to tell because of the scaling