The scores of an eighth-grade math test have a normal distribution with a mean u = 83 and a standard deviation o = 5. If
2 answers:
Answer:
Step-by-step explanation:
* <em>Lets explain how to find the z-score </em>
- If the data have normal distribution with a mean μ and a standard
deviation σ and we need to find the z-score for score x,then
* <em>Lets solve the problem</em>
- The scores of an eighth-grade math test have a normal distribution
- The mean is 83
- The standard deviation is 5
- Din's test score was 92
- We need to find z-score of Din's test score
∵ x = 92
∵ μ = 83
∵ σ = 5
∴
You might be interested in
Answer:
12,000.
Step-by-step explanation:
Let x be the number of people that were enrolled last year.
We have been given that enrollment at ELAC decreased by 5%, or 600 people, the year. We are asked to find the number of people that were enrolled last year.
We can set as equation such that 5% of x equals 600.
Therefore, 12,000 people were enrolled last year.