Question: A class average mark in an exam is 70. The average of students who scored below 60 is 50. The average of students who scored

  1. A class average mark in an exam is 70. The average of students who scored below 60 is 50. The average of students who scored 60 or more is 75. If the total number of students in this class is 20, how many students scored below 60?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Q:

1. The frequency distribution shows a summary of the scores from a Mathematics exam at a local high school. Twenty students took the exam. Exam Scores Frequency Relative Cumulative Cumulative...

Q:

Answer the following questions 1.The golf scores of the players on two golf teams, Team A and Team B, are listed in order from lowest to highest below. Team A: 65, 67, 67, 68, 70, 70, 70, 71, 74, 77,...

Q:

CE 7070 HW#2: RV Functions and Moments excel w/ graphs 1. Forty-Five 2x10 timber beams were tested for modulus of rupture (MOR). The results are shown below (psi): 4464 5001 4880 6486 5897 3758 5974...

Q:

less than more! Save Sowinski's Grade Book - Excel Tests Marks Name Student Number Test 1 est 2 est 3 Test4 Test Mark Final Mark Grade Adamson, John 111223333 80 70 12 Barber, BettyAnn 444556666 92...

Q:

could i get the correct answers please 1 The school cafeteria collects data on students' juice box selections. This is an example of A numerical, ordinal data. C categorical, ordinal data. B...

Q:

Two students recently took trigonometry class tests. The students are at different schools but wanted to compare their performance. The first student scored 80 on the test. Her class average was 85...

Q:

How do you do question 2F, 4 & 5?? Im not sure if my answers for 4 & 5 are correct. Question 2F, the answer results in -4.34 however, you can't find that on the percentile table so please help....

Q:

Hello help me with this pleaseghfff Summative Measures of Position Name: Encircle the correct answer. 1. Mhel's score in a 75 item test was the median score. What is his percentile rank? A. 35 th C....

Q:

Summary Continue to develop your understanding of repetition control structures and file I/O by building a class averaging program (here "class" means a course, not an element of the Java language)....

Q:

1. Write the program described below. Submit the single Java file (i.e., ".java" text file) that contains your program: a. Please submit only a single Java file via Canvas. Do not email your...

Q:

Each year thousands of children are badly burned by hot tap water. Figure P19.12 shows a cross-sectional view of an anti scalding faucet attachment designed to prevent such accidents. Within the...

Q:

On February 1, the euro is worth $0.8984. For May 1, did it move to $0.9457. How much has the euro appreciated or depreciated against the dollar during this 3 month period?

Q:

Depreciation deductions, like any other business expenses, reduce the income that a firm reports False No answer text provided. No answer text provided. True

Q:

The personal state income tax: is illegal in the united states. Generates about half of the Taxes budget. all of the others. Is not used in Texas