Answer:
C. The note on the package only told customers to call in the event that they had a concern, which could bias the results negatively.
Explanation:
Since customers were only told to call if they had concerns, all of the calls were about concerns or problems that they were having - meaning all of the calls were negative. However, they were never informed to call if they were happy or content with the product, meaning they were never informed of the people who had positive comments, only negative.
Answer:
Step-by-step explanation:
First you have to make them both have common denominators using a common factor between both denominators(20)
3/5 time since 4/4 is equal to 12/20
1/4 times 5/5 is equal to 5/20
12/20 + 5/20=17/20
Answer:
450$
Step-by-step explanation:
100%-20%=80%
If 80% is 360$
20%=360$÷4
=90$
360$+90$=450$
191 is the correct answer.