Question: Two classes took the same test. One class of 25 students made an average grade of 82%, the other class of 32 students made

Two classes took the same test. One class of 25 students made

Two classes took the same test. One class of 25 students made an average grade of 82%, the other class of 32 students made an average grade of 75%. The average grade for all students in both classes is approximately: 1. 80% 78% 3. 81.25% 4. 76.5% 5. 79.75% 2.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Solution 2 The total number of students 25 32 57 3D We know ... View full answer

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!

In a class of 25 students the average grade on a quiz is 16.85, with a standard deviation is 4.75. The grades are known to be normally distributed. a. Determine the standard error of the mean. b....

1. In class of 25 students 3 students failed. What is the probability that student from this class will pass (NOT fail)? a) 0.45 b) 0.60 c) 0.72 d) 0.88 2. If you roll two dice what is the...

Students in a business statistics class were asked what grade they expected in the course and whether they worked on additional problems beyond those assigned by the instructor. The following table...

1.Numerical descriptive measures computed from population measurements are called parameters. a. True b. False 2.Numerical descriptive measures computed from sample measurements are called...

Three Statistics classes all took the same test. Histograms and boxplots of the scores for each class are shown below. Match each class with the corresponding boxplot. 54321 spiaprisio # sacos 90 60...

=+57. Test scores. Three Statistics classes all took the same test. Here are histograms of the scores for each class. # of Students 30 60 90 2 4 6 Class 1 # of Students 30 60 90 1 2 3 4 5 Class 2 #...

Test scores. Three statistics classes all took the same test. Here are histograms of the scores for each class. a) Which class had the highest mean score? b) Which class had the highest median score?...

Hint Compare their z scores Last year s Scholastic Assessment Test SAT mean was 500 with standard deviation 100 David scored 350 Last year s ACT mean was 20 with standard deviation 5 Justina scored...

Question 35 (4 points) 8 N sauopnas 70 # of students # of students 40 50 60 70 80 9 040 50 90 40 60 70 80 90 Class 1 Class 2 Class 3 8 8 2 8 8 9 3 Please see below. I need this asap please U Three...

A tracking radar antenna is locked on an airplane flying at a constant altitude of 5 km, and a constant speed of 540 km/h. The airplane travels along a path that passes exactly above the radar...

Calculate the current price of a bond that pays semi-annual coupon payments and has the following characteristics: (a) NPER15, (b) Coupon Payments--$73, and (c) Market Rate of Interest13%.the market...

Greg has one employer, and his only source of income is wages. In 2019, he claimed the standard deduction and no other deductions or credits. He received a large refund after filing his 2019 tax...

The total annual spending b y tourists i n a resort city i s $ 2 5 0 million. Approximately 7 5 % o f that revenue i s again spent i n the resort city, and o f that amount approximately 7 5 % i s...

A 0.145 kg baseball pitched horizontally at 35.0m/s strikes a bat and is popped straight up to a height of 55.6m. If the contact time is 1.4ms, calculate the average force on the ball during the...

You pour 108 cm3 of ethanol, at a temperature of -10.0oC, into a graduated cylinder initially at 20.0oC, filling it to the very top. The cylinder is made of glass with a specific heat of 840 J/kg. K...

A 6.0-kg block is pushed 8.0 m up a rough 37o inclined plane by a horizontal force of 75 N. If the initial speed of the block is 2.2m/s up the plane and a constant kinetic friction force of 25 M...

Due to a gravitational torque exerted by the Moon on the Earth, our planets rotation period slows at a rate on the order of 1 ms/century. (a) Determine the order of magnitude of the Earths angular...

Determine the value for c and the covariance and correlation for the joint probability density function fXY (x, y) = c over the range 0

f Your team is creating Webpages for the company intranet. Some of the pages include advanced technologies, so you need to ensure that certain current browsers are used to view the pages. You can...

4. Statistics studies both quantitative and qualitative variables.* True False 5. Statistics is the science of analyzing* A. Qualitative data B. Quantitative data C. Both a and b D. None of these 6....

In Java: Create two classes one for Students and one for driver class Students has three attributes: student name, grade 1, and grade 2 Create five objects(for five students) with different names,...

F12 Enter MAT 102 DAH Test # 1 F an Directions: Print this first DAH test and complete it on the provided answer pages. You should show your work because partial credit may be given for correct work....

1. People have claimed that Jamie's paintings have given them the blues. Clearly this cannot be entirely correct, since many of Jamie's paintings contain no blue at all. The argument...

1. True or False. Justify for full credit. (a) A is an event, and Ac is the complement of A, then P(A AND Ac) = 0. (b) If the variance of a data set is 0, then all the observations in this data set...

(1) In GradeBook2revised class, modify the constructor so that it has three parameters: the course name, the number of students, and the number of exams. Define number of students and the number of...