Author Question: The average age in a sample of 90 students at City College is 20 . From this sample, it can be ... (Read 151 times)

arivle123 · **on:** Aug 1, 2018

The average age in a sample of 90 students at City College is 20 . From this sample, it can be concluded that the average age of all the students at City College _____.
a. must be more than 20, since the population is always larger than the sample
b. must be less than 20, since the sample is only a part of the population
c. could not be 20
d. could be larger, smaller, or equal to 20

Question 2

An alternative or research hypothesis is an assertion that holds if the null hypothesis is false.
Indicate whether the statement is true or false