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
Mashutka [201]
3 years ago
14

Solve for the indicated values. Problem: The IQ scores for a sample of 24 students who are entering their first year of college

are: 115      119      119      134 121      128      128      152   97       108       98      130 108      110      111      122 106      142      143      140 141      151      125      126 a. Find the mean IQ score. b. Find the median IQ score. c. Find the modal IQ score. d. Find the range. e. Find the variance f. Find the standard deviation. g. Find the coefficient of variation.​
Mathematics
1 answer:
posledela3 years ago
5 0

Answer:

a. The mean is 123.9

]b. The median is 123.5

c. The modes are 119, 128 an 108

d. The range is 55

e. The variance is 246.341

f. The standard deviation is 15.7

g. The coefficient of variation is 12.672

You might be interested in
Suppose you like to keep a jar of change on your desk. Currently, the jar contains the following: 17 Pennies 10 Dimes 19 Nickels
MatroZZZ [7]

Answer:

0.0688 = 6.88% probability that you reach into the jar and randomly grab a nickel and then, without replacement, a penny.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Probability of grabbing a nickel:

19 nickels out of 17+10+19+23 = 69 coins, so:

P(A) = \frac{19}{69}

Probability of grabbing a penny, considering the first coin grabbed was a nickel:

17 pennies out of 68 coins. So

P(B|A) = \frac{17}{68} = \frac{1}{4}

What is the probability that you reach into the jar and randomly grab a nickel and then, without replacement, a penny?

P(A \cap B) = P(A)P(B|A) = \frac{19}{69} \times \frac{1}{4} = \frac{19}{69*4} = 0.0688

0.0688 = 6.88% probability that you reach into the jar and randomly grab a nickel and then, without replacement, a penny.

6 0
3 years ago
Show all work to factor x4 − 17x2 + 16 completely.
Triss [41]

Answer:

Step-by-step explanation:

put x^{2}=y\\squaring\\x^{4}=y^{2}\\y^2-17y+16=y^2-y-16y+16=y(y-1)-16(y-1)=(y-1)(y-16)\\replacing the value of y\\x^4-17x^2+16=(x^2-1)(x^2-16)=(x+1)(x-1)(x+4)(x-4)

8 0
3 years ago
Which expression is equivalent to 1/4(2−5x+6) ?<br> Please answer fast!
Alecsey [184]
If x=3 then 5x3=15-2=13+6=19x1/4=4 3/4 so that means that 2 1/4+2 1/2 could be equivalent

P.S.I just chose 3 because it was the first number to pop into my head
~Mathlete12321~
5 0
3 years ago
Read 2 more answers
10 pounds of onions cost $100 how many pounds of onions can get with $150
erma4kov [3.2K]

Answer:

15

Step-by-step explanation:

$100 / 10 pounds = $10 / pound

$150 / 10 dollars  = 15 pounds of onions

4 0
3 years ago
Read 2 more answers
Expand and simplify: 3(2x+1)-4(2x+5)
Vlada [557]

Answer:

-2x-17

Step-by-step explanation:

7 0
4 years ago
Other questions:
  • Ming throws a stone off a bridge into a river below. The stone's height (in meters above the water), xxx seconds after Ming thre
    9·1 answer
  • Thu wants to play “Guess My Number,"she states. “When I triple my number and add five ,I get twenty-six.what is my number?" What
    5·2 answers
  • What is the scale factor on a graph
    7·1 answer
  • Help me..
    10·1 answer
  • What is the absolute value of -11 2/3
    15·1 answer
  • What is the solution set of the inequality x+2/2≥-7-x/2
    13·2 answers
  • A first year student deposits $250 into a savings account at the Owl Credit Union at Dundalk High School paying an annual intere
    11·1 answer
  • Rewrite as an exponential equation ln7=x
    9·1 answer
  • Drag numbers to fill in the table to organize the information in this problem.
    7·1 answer
  • one gym membership charges $10 a month with a sign-up fee of $45. Another gym does not charge patrons a sign-up fee but costs $2
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!