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
qaws [65]
3 years ago
7

The total scores on the Medical College Admissions Test (MCAT) in 2013 follow a Normal distribution with mean 25.3 and standard

deviation 6.5.
a) what are the median and the first and third quartiles of the MCAT scores? what is the interquartile range?

please i need help!!!
Mathematics
1 answer:
aivan3 [116]3 years ago
8 0
1st quartile (25%) and the 3rd quartile (75%) values are -0.6745 and 0.6745 respectively. Use this formula z= (x-mean)SD -0.6745 = (x-25.3)/6.5. 
x=25.3 - 0.6745(6.5) = 25.3 - 4.3843 = 20.9157 1st Quartile
 0.6745 = (x - 25.3) 6.5
 x = 25.3 + 0.6745 = 25.3 + 4.3843 = 29.6843 3rd quartile 
 interquartile range is the difference between the 1st quartile and the 4th quartile
You might be interested in
Can anyone help me please on this function.
cricket20 [7]

USE (m a t h w a y) its real easy to use

Step-by-step explanation:

6 0
2 years ago
A shop recorded total sales of $2,000 on Monday. On Tuesday, its sales fell by 10%. On Wednesday, sales fell by another 20% comp
enyata [817]
2000 - Monday
2000 - 0.10(2000) = 1800 -- Tuesday
1800 - .20(1800) = 1440 -- Wednesday
.25(2000) + 1440 = 1940 -- Thursday

net change = 2000 - 1940 = 60 <== net change
7 0
3 years ago
Which of the following statements best describes the value of the expression 12x + 2 when x = 9?
RideAnS [48]

Answer:

The answer is C.

Step-by-step explanation:

Hope this helps

4 0
3 years ago
Read 2 more answers
Slope =-1, y-intercept = 3
ss7ja [257]

If you are looking for the equation, then it would be y = -x+3

This is the same as y = -1x+3 which is in slope intercept form y = mx+b

m = -1 = slope

b = 3 = y intercept

If you want to graph this, then plot the points (0,3) and (1,2). Then draw a straight line through them both. Extend the line in both directions as much as possible.

7 0
2 years ago
Read 2 more answers
PLEASE HELP ASAP!!!!!
Nata [24]

Answer:

\huge\boxed{\sf x = 20}

Step-by-step explanation:

=> Since it is an equilateral (Having all angles and all sides equal)  triangle, so every angles will be equal to the other.

=> The sum of the measures of interior angles of triangle add up to 180 degrees.

So,

3x + 3x + 3x = 180

9x = 180

Divide both sides by 9

x = 20

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
7 0
3 years ago
Other questions:
  • Subtract exponents 9x10 3 -1x10 4
    10·1 answer
  • Missy bought 4 umbrellas and 7 hats $46.00. Each umbrella cost the same amount. Each has Costs the same amount. The price of an
    12·2 answers
  • Q # 28 please help.Use a calculator to find the value
    9·2 answers
  • Harper used 1/3 cup walnuts, 1/8 cup chocolate chips. and 1/2 cup coconut in her cookie recipe. which of these ingredients did s
    8·1 answer
  • If the denominator of 5/6 is increased by a number and the numerator is doubled, the result is 1, find the number
    5·1 answer
  • Pulse rates of women are normally distributed with a mean of 77.5 beats per minute and a standard deviation of 11.6 beats per mi
    9·1 answer
  • The rare tweety-birds are decreasing at a rate proportional to the
    15·1 answer
  • Help me PLEASEEEEEEEEEEEEE
    9·1 answer
  • I really need help ASAP
    10·1 answer
  • Is (5,50) a solution to the linear system y = 5x + 25 and y = 3x + 35? Explain your reasoning.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!