Question

In: Math

One out of 5 of a group of students took a math test, 28% of the same group took a science test and the rest took a history test.

One out of 5 of a group of students took a math test, 28% of the same group took a science test and the rest took a history test. If each student took one test only, what percent of students took a history test?

Solutions

Expert Solution

One out of 5 may be written as a fraction equal to

1/5

and in percent as

20%

The total number of students in percent is 100%. Since 20% took math and 28% took science, the percent of those who took history is

100% - 20% - 28% = 52%

52%

Nipun Maity answered 2 years ago
Next > < Previous

Related Solutions

Students took a math placement test and were placed in one of three levels of a...
Students took a math placement test and were placed in one of three levels of a math course: A, B, or C. The probability of placements are illustrated in the table below. Verify the 2 requirements for a probability distribution are met. What is the probability a student is not placed into course B? What is the probability a student is placed into course C or B? Math Course A B C Probability 0.35 0.22 0.43
A large group of students took a test in physics and the final grades have a...
A large group of students took a test in physics and the final grades have a mean of 70 and a standard deviation of 10. If we can approximate the distribution of theses grades by a normal distribution, what percent of students a. Score higher than an 80 but less than 90? b. Should pass the test (grades > 60)? c. Should fail the test (grades < 60)? d. If you randomly sample 30 students, what is the probability that...
A large group of students took a test in Statistics and the final grades have a...
A large group of students took a test in Statistics and the final grades have a mean of 70 and a standard deviation of 10. If we can approximate the distribution of these grades by a normal distribution, what percent of the students a) scored between 50 and 90? b) scored higher than 90? c) should pass the test (grades≥50) d)non of the above d) should fail the test (grades<50)?
Three independent group students took an exam. The data presented below represent the students’ test scores....
Three independent group students took an exam. The data presented below represent the students’ test scores. Group 1 Group 2 Group 3 95 79 65 98 76 68 80 60 70 77 88 87 99 69 66 90 66 72 Based on the post hoc (Tukey) test, which two groups have a significant difference at the 0.05 level ? a. group 1 and group 2 b. group 1 and group 3 c. group 2 and group 3 d. both a...
For 5 students, scores on a math test (X) and statistics (Y) are given as follows:...
For 5 students, scores on a math test (X) and statistics (Y) are given as follows: X: 95 85 80 70 55 Y: 85 75 70 75 65 a) Fit the regression line b) Test the model c) Find the 90% Confidence Interval? d) For a student who has a math score 75, estimate her/his statistics grade?
For 5 students, scores on a math test (X) and statistics (Y) are given as follows:...
For 5 students, scores on a math test (X) and statistics (Y) are given as follows: X: 95 85 80 70 55 Y: 85 75 70 75 65 a) Fit the regression line b) Test the model c) Find the 90% Confidence Interval? d) For a student who has a math score 75, estimate her/his statistics grade?
5. A class of undergraduate criminal justice students took a test and the average score of...
5. A class of undergraduate criminal justice students took a test and the average score of the class was 280 with a standard deviation equal to 40. What minimum score does a student need to obtain in order to pass the exam? (60th percentile and above) What is the minimum score a student need to receive in order to get at least a B (80th percentile) at the exam?
Nine students in a college math class took a pre-test. We are interested in whether the pre-test is useful for predicting final course percentage.
  Nine students in a college math class took a pre-test. We are interested in whether the pre-test is useful for predicting final course percentage. Here are the students’ scores: Student 1 2 3 4 5 6 7 8 9 Pre-Test 83 81 70 79 69 61 88 72 86 Final Course Percentage 68 59 72 75 55 52 81 63 70 (a) Use R to make a scatterplot of the data. Does it seem like a straight line model...
A math department gives all college algebra students a test to test rather or not students...
A math department gives all college algebra students a test to test rather or not students taking college algebra on site perform better on Final than students that take class completely online. The Math department gathers random samples of 40 on-site students (Students who take class in the classroom) and 35 online students. The test score for each student in the random sample is determined. The mean score for the on-site students is 75, with a standard deviation of 12....
A math class consists of 28 students, 13 female and 15 male. Three students are selected...
A math class consists of 28 students, 13 female and 15 male. Three students are selected at random, one at a time, to participate in a probability experiment (selected in order without replacement). (a) What is the probability that a male is selected, then two females? (b) What is the probability that a female is selected, then two males? (c) What is the probability that two females are selected, then one male? (d) What is the probability that three males...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT