Statistics problem
The scores on a biology exam were normally distributed with a mean of $71$ and a standard deviation of $9$. A failing grade on the exam was anything $2$ or more standard deviations below the mean. What was the cutoff for a failing score? Approximately what percentage of the students failed?
Mona Vinci
39
Answer
Answers can only be viewed under the following conditions:
- The questioner was satisfied with and accepted the answer, or
- The answer was evaluated as being 100% correct by the judge.
Ering
93
The answer is accepted.
Join Matchmaticians Affiliate Marketing
Program to earn up to a 50% commission on every question that your affiliated users ask or answer.
- answered
- 628 views
- $3.00
Related Questions
- Statisitical Experimental Design Question
- Number of different drinks that can be made using 6 ingredients
- How do I compare categorical data with multiple uneven populations?
- Weighted average issue
- Maximum ball height and time for it to reach it
- Dice expected value question
- Describing Bayes Theorem succinctly in words
- statistics- data analysis
I have already asked this question. Please do not respond.