1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kisachek [45]
2 years ago
7

At a college the scores on the chemistry final exam are approximately normally distributed, with a mean of 75 and a standard dev

iation of 15. The scores on the calculus final are also approximately normally distributed, with a mean of 83 and a standard deviation of 13. A student scored 82 on the chemistry final and 80 on the calculus final.
Relative to the students in each respective class, in which subject did the student do better?

a) Calculus

b) Chemistry

c) The student did equally well in each course

d) There is no basis for comparison

e) None of the above
Mathematics
1 answer:
AysviL [449]2 years ago
5 0

Answer:

b) Chemistry

Step-by-step explanation:

To compare both scored we need to standardize the scores using the following equation:

\frac{x-m}{s}

Where x is the score, m is the mean and s is the standard deviation. So, 82 on chemistry is equivalent to:

\frac{82-75}{15}=0.4667

Because the mean of the scores on the chemistry final exam is equal to 75 and the standard deviation is 15

At the same way, 80 on Calculus is equivalent to:

\frac{80-83}{13} =-0.2308

Because the mean of the scores on the calculus final exam is equal to 83 and the standard deviation is 13

Now, we can compare the values. So, taking into account that -0.2308 is lower than 0.4667, we can said that the student do better in Chemistry.

You might be interested in
Ten friends share 6 pizza what fraction does each friend get
riadik2000 [5.3K]
1.6 pieces of pizza for each person.
8 0
3 years ago
Read 2 more answers
How do I solve for x and y?
Dafna1 [17]

Answer:

Put them all in a equation together.

2x + 10 + 3x - 5 + 3x - 12 + 7y + 2

Here now try solving it this way and see if that works.

Brainleist please <3

6 0
3 years ago
Read 2 more answers
How to find the perimeter of the polygon with the given vertices
ziro4ka [17]
You would add all the sides together

4 0
3 years ago
8x+15≤51 slove.PLEASE HELP MEEEEEEEEEEEEEEE
inysia [295]

Answer:

x≤9/2

Step-by-step explanation:

8x+15≤51

Subtract 15

8x+15-15≤51-15

8x+≤36

Divide by 8

8x/8≤36/8

x≤9/2

7 0
2 years ago
A ​used-droid dealership buys a droid for ​$2900 and then sells it for ​$4300. What is the percent​ increase?
Anna71 [15]

The percent increase is 48.28

Step-by-step explanation:

Given,

Purchase price of used-droid = $2900

Selling price of used=droid = $4300

Profit = Selling price - purchase price

Profit = 4300-2900 = $1400

Percent increase = \frac{Profit}{Purchase\ price}*100

Percent\ increase=\frac{1400}{2900}*100\\\\Percent\ increase=\frac{140000}{2900}\\\\Percent\ increase=48.275\%

Rounding off to nearest hundredth;

Percent increase = 48.28%

The percent increase is 48.28

Keywords: percentage, subtraction

Learn more about percentages at:

  • brainly.com/question/12148432
  • brainly.com/question/12223460

#LearnwithBrainly

8 0
3 years ago
Other questions:
  • If D is the midpoint of the segment AC and C is the midpoint of segment DB , what is the length of the segment AB , if AC = 3 cm
    13·2 answers
  • What is the completely factored form of d^4-8d^2+16
    11·1 answer
  • About to submit a topic test, wish me luck!!!
    10·2 answers
  • PLEASE HELP DUE IN 2 HOURS
    9·2 answers
  • A polynomial is given below. 3x^6+2x^4-x^3+7
    6·1 answer
  • It takes 343 inches³ of water to fill an empty cube. If the sides of the cube were tripled, how much water would be needed to fi
    9·1 answer
  • Evaluate each expression 5(6+2)
    11·2 answers
  • Jose went to the store and brought a hat that cost $23.60. How much will it cost if Jose purchased 6 hats?
    11·1 answer
  • Which point is on the line that passes through (0, 6)<br> and is parallel to the given line?
    12·1 answer
  • Apples come in bags of 4. Oranges come in bags of 6. W What is the least number of bags of each a person has to buy to have the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!