math scores

Gary has to take four Math tests to complete his seventh grade. On each of the tests he can score a maximum of 25. His scores on three tests are 20, 22 and 16. What should be his score in the fourth test, so that he gets a total score of at least 77..

Annie conducted a math test for her students. The scores they got in the test are 16, 19, 9, 14, 31, 9, 24, 16, 19, 14 and 31. Find the difference between the lower quartile and the middle quartile of the data. => 9 or 14 or 16 or 2..

Nathan scored 7 less than Joe in Zoology. Find Nathan′s score, if Joe′s score is m . => m - 7 or 7 - m or m × 7 or m + 7..

The scores of students in a math test are 34, 9, 12, 15, 17, 20, 25, 28, 30, 20 and 16. What is the middle quartile of the data? => 9 or 20 or 17 or 34..

Write the z - score and the test that has a better relative position of the two tests? Test 1 X = 53 X ‾ = 61 s = 8 Test 2 X = 112 X ‾ = 122 s = 9 => - 1.1, Test 2 or - 1.1, Test 1 or - 1, Test 1 or - 1, Test 2..

A relation is observed between the number of days of preparation by a student for math, science and statistics tests and the points he scored. The relation is: {(3, 68), (4, 96), (2, 52)}. Determine if this relation is a function or not. => It is a function. or It is not a funct..

Chang's average on five math tests is between 91 and 95. He scored equally in first and third tests; 5 fewer points in the second test , 11 points more than the second test in the fourth test and 90 in the 5 th test. Which of the following are possible scores in the fi..

A school teacher estimated that the average score of the students in a math quiz is less than 20. A sample of 30 students is selected for the math quiz and their scores are as shown. Find the p -value for the test. Is there enough evidence to support the teac..

The scores of eight students on a math test are shown below. 23, 30, 30, 35, 34, 53, 47, 40 Which stem-and-leaf plot correctly represents the data? => Graph 3 or Graph 4 or Graph 2 or Graph 1..

What is the formula to find the z score for the difference between two population means, if X 1 and X 2 are the sample means, s 1 2 and s 2 2 are the sample variances and n 1 and n 2 are the size of the samples? (Assume both n 1 and n 2 are greater than..