Surabhi scored an 88 on her last test. Her scores before the last test were `95,89,90 and 93.` What score must Surabhi make on the next test in order to receive a mean score of 90 ?

Caroline scored 85, 88, and 89 on three of her four history tests. If her average score for all tests was 90, what did she score on her fourth test?

Grace's average bowling score over the past 6 games is 150. If she wants to raise her average score by 10%, and she has two more games remaining in the season, what must her average score on the last two games be ?

Rajeev needs a minimum of 360 marks in four tests in a Mathematics course to obtain an A grade. On his first three tests, he scored 88,96,79 marks. What should his score be in the fourth test so that he can make an A grade?

Rajeev needs a minimum of 360 marks in four tests in a Mathematics course to obtain an A grade. On his first three tests, he scored 88,96,79 marks. What should his score be in the fourth test so that he can make an A grade?

The histogram above shows the distribution of 30 test scores. If test score is selected at random, what is the probability that the score falls in the interval that contains the median score?

The given bar graph shows the marks obtained by students in a Science test. Who scored the highest marks in the test ? Whats in the score ?

The marks scored by Rohit in two tests were 65 and 70. Find the minimum marks the should score in the third test to have an average of at least 65 marks.

The marks scored by Rohit in two tests were 65 and 70. Find the minimum marks he should score in the third test to have an average of at least 65 marks.

On a test that has normal distribution of scores, a score of 58 falls two standard deviation below the mean, and a score of 85 is one standard deviation above the mean. What is the mean score of this test?