For a Math 221 project, one group of students studied the ages of students on the BYU-Idaho campus. They collected data from a random sample of n=100n=100 students. The sample mean was 21.2 and the sample standard deviation was 2.61. An excerpt of their data is given below.

The group notices an error in their data. The age of one of the males (ID=3) was entered incorrectly. He is actually 21 years old.

When the error is corrected, what will happen to the sample median?

A team of dermatological researchers were studying skin cancer among 60-70 year old American men. Suppose you were a part of the research team and take a sample of n=70 men from this age group and calculate the mean number of skin cancer spots in the sample. Also suppose that it is known that the distribution of the number of cancer spots is right-skewed.

 

Transcribed Image Text:

ID Gender Age 1 Female 21 2 Male 18 3 Male 12 (error) 4 Female 20 : 199 Male 25 ID Gender Age 1 Female 21 2 Male 18 3 Male 12 (error) 4 Female 20 : 199 Male 25