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
eimsori [14]
2 years ago
5

On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 106 and a standard deviatio

n of 14. Suppose one individual is randomly chosen. Let X = IQ of an individual.
a. What is the distribution of X? X ~ N(,)

b. Find the probability that a randomly selected person's IQ is over 107. Round your answer to 4 decimal places.

c. A school offers special services for all children in the bottom 7% for IQ scores. What is the highest IQ score a child can have and still receive special services? Round your answer to 2 decimal places.

d. Find the Inter Quartile Range (IQR) for IQ scores. Round your answers to 2 decimal places.
Q1:
Q3:
IQR:
Mathematics
1 answer:
DENIUS [597]2 years ago
5 0

Answer:

Step-by-step explanation:

N(106,14²)

(calculated using excel, let me know if you were supposed to use a normal table) = 0.4715

85.34

Q1:96.56

Q3:115.44

IQR (which is Q3-Q1)= 115.44-96.56= 18.88

You might be interested in
Brian invests £1500 into his bank account. He receives 2% per year simple interest. How much will Brian have after 3 years? Give
Jet001 [13]

Answer:

1590

Step-by-step explanation:

1500 x 0.02

= 30

30 x 3

= 90

1500+90 = 1590

(ps.. there was an equation for this i just forgot it, you can look it up and check it)

8 0
3 years ago
What is the solution of 3+(x-2/x-3)<=4
Minchanka [31]

Answer: x < 3

Step-by-step explanation:

Solve the rational inequality by combining expressions and isolating the variable x.

7 0
3 years ago
The length of a rectangle is 3 times the width. If the length is decreased by 4 meters and the width is increased by 1 meter, th
olga nikolaevna [1]

Good morning☕️

______

Answer:

w is the width

L is the length

p is the perimeter

w=9

L=27

___________________

Step-by-step explanation:

p=2[(L-4) + (w+1)]

⇔p=2[(3w-4) + (w+1)]

⇔p=2[4w-3]

⇔p=8w-6

⇔66=8w-6

⇔8w=72

⇔w=9

Then L=3w=27

:)

6 0
3 years ago
translate the words into a algebraic expression. "twenty-seven more than a number squared" "one less than three times a number"
Stella [2.4K]

Answer:

n^2+27 and 3n-1

Step-by-step explanation:

n is a number.

a number squared is n^2

27 more than a number squared is n^2+27

n is a number.

three times a number is 3 times n, or 3n

one less than that is 3n-1

Hope this answer helped! :)

3 0
3 years ago
PLEASE HELP
almond37 [142]

Answer:

x + 6y = -3

Step-by-step explanation:

Explained in the paper.

8 0
3 years ago
Other questions:
  • Given a mean of 61.2 and a standard deviation of 21.4, within how many standard deviations of the mean do the values 45,78,62,90
    14·2 answers
  • PLZ HELP A biker travelling at his usual speed can go from his house to work in 4 hours. When the weather is bad, he travels 6 m
    8·2 answers
  • Henry bought 246 pieces of candy to share evenly with his 6 guests. How many pieces of candy will each guest recieve?
    6·2 answers
  • Leila runs 4 miles in 30 minutes. At the same rate, how many minutes would she take to run 10 miles?
    15·2 answers
  • PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B
    15·1 answer
  • NEED ANSWER ASAP!!!!
    14·1 answer
  • What are the domain and range of this function?<br><br> PLZ HELP ILL MARK AS BRAINLIEST!!!
    11·1 answer
  • 3,668 &gt; 13,667
    12·1 answer
  • Help me please :) . <br> I’ll mark you as a brainliest.
    13·2 answers
  • Complete the table of values for y=x^2+2x-1
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!