# Math

A student scores 74 out of 100 on a test,If the maximum score is 100. What score does the student need at least an average of 80?

1. 👍 0
2. 👎 0
3. 👁 156
1. How many tests?

1. 👍 0
2. 👎 0

## Similar Questions

1. ### statistics!

1) Entry to a certain University is determined by a national test. The scores on this test are normally distributed with a mean of 500 and a standard deviation of 100. Tom wants to be admitted to this university and he knows that

asked by joane on October 24, 2012
2. ### Math

The College Board reported the following mean scores for the three parts of the Scholastic Aptitude Test (SAT) (The World Almanac, 2009): Assume that the population standard deviation on each part of the test is = 100. a. What is

asked by Vanessa on April 16, 2014
3. ### Statistics

Suppose that two different tests A and B are to be given to a student chosen at random from a certain population. Suppose also that the mean score on test A is 85, and the standard deviation is 10; the mean score on test B is 90,

asked by Charles on February 16, 2011
4. ### Statistics

Given that a population of scores is normally distriibuted with u=100 and o=8, determine the following: a. The percentile rank of a score of 120 b. The perentage of scores that are below a score of 99 c. The percentage of scores

asked by Grand Canyon University on August 14, 2013
5. ### statistics

Using the 68-95-99.7rule. Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: a. percentage of scores less than 100

asked by Christine on May 10, 2010
1. ### statistics

Suppose that the test scores for a college entrance exam are normally distributed with a mean of 450 and a standard deviation of 100. If a student is selected at random what is the probability that the student will score above

asked by kevin on April 24, 2013
2. ### Statistics

In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 15% of

asked by Maria on February 19, 2013
3. ### Math-statistics

Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantiles: a.percentage of scores less than 100 b. relative frequency of

asked by Jane Brown on March 1, 2013
4. ### statistics

The College Board reported the following mean scores for the three parts of the Scholastic Aptitude Test (SAT) (The World Almanac, 2009): Assume that the population standard deviation on each part of the test is = 100. a. What is

asked by Vanessa on April 15, 2014
5. ### statistics

The College Board reported the following mean scores for the three parts of the Scholastic Aptitude Test (SAT) (The World Almanac, 2009): Assume that the population standard deviation on each part of the test is = 100. a. What is

asked by Vanessa on April 14, 2014
6. ### Statistics

IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the x- score that corresponds to a z-score of 2.33.

asked by chalulu on March 13, 2011