Friday
April 18, 2014

Homework Help: stats

Posted by taylor quenzler on Thursday, July 26, 2012 at 8:58pm.

2. A standardized exam was provided to all 3rd graders in Arizona schools. The average score was 75 with a standard deviation of 10. Assuming that the scores were normally distributed, answer the following questions. (a) What z-score corresponds with a score of 75? (b) What z-score corresponds with a score of 80? (c) What z-score corresponds with a score of 85? (d) What z-score corresponds with a score of 100? (e) What percent of students scored between a 75 and 85? (f) What percent of students scored between a 70 and 85? (g) What percent of students received a score of 95 or higher?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

stats - I scored an 85 percent on my exam. The mean score for that quiz was -83....
stats - Relatively speaking, which statistics exam did you do better on? On ...
statistics - The time to complete a standardized exam is approximately normal ...
Statistics - Multiple choice question that's hard to figure out and understand.(...
stats - Identify the direction and all possible interpretations of each of the ...
STATS - Determine the p–value associated with the values of the standardized ...
standardized Testing - Is it possbile to score in the 100th percentile on a ...
stats - Identify the direction and all possible interpretations of each of the ...
stats - Some IQ tests are standardized to a Normal model with a mean of 100 and ...
Statistics - In Professor Smith's statistics course, the correlation between ...

Search
Members