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
Sveta_85 [38]
2 years ago
12

A normal population has mean and standard deviation . (a) What proportion of the population is greater than ? (b) What is the pr

obability that a randomly chosen value will be less than .
Mathematics
1 answer:
Aloiza [94]2 years ago
5 0

Answer:

0.0171

0.89158

Step-by-step explanation:

Given :

μ = 60

Standard deviation , σ = 17

The probability that a randomly chosen score is greater than 96;

P(Z > Zscore)

Zscore = (score, x - μ) / σ

Zscore = (96 - 60) / 17 = 2.118

P(Z > 2.118) = 1 - P(Z < 2.118) = 1 - 0.9829 = 0.0171

The probability that a randomly chosen score is less than 81;

P(Z < Zscore)

Zscore = (score, x - μ) / σ

Zscore = (81 - 60) / 17 = 1.235

P(Z < 1.235) = 0.89158

You might be interested in
Solve x2 + 2x = 4 for x by completing the square. x equals plus or minus square root of 5 plus 1 x equals plus or minus square r
steposvetlana [31]

Answer:

x equals plus or minus square root of 5 minus 1

Step-by-step explanation:

we have

x^{2} +2x=4

Divide by 2 the coefficient of the x-term

2/2=1

squared the number

1^2=1

Adds both sides

x^{2} +2x+1=4+1

x^{2} +2x+1=5

Rewrite as perfect squares

(x+1)^{2}=5

take the square root both sides

x+1=(+/-)\sqrt{5}

x=(+/-)\sqrt{5}-1

therefore

x equals plus or minus square root of 5 minus 1

4 0
3 years ago
Do you know how to do integer exponents
Natasha2012 [34]

Answer:

sure i do! pls provide answer choices.

4 0
3 years ago
PLZ HELP AGAIN DUE TODAY ANSWER CHOICES ARE<br> A.140<br> B.188<br> C.132<br> D.104
spin [16.1K]
A) I don’t know for sure but please let me know :)
6 0
3 years ago
Jerry jogs the same round trip path everyday. He jogs 0.7 miles to the park and then 0.5 miles from the park to the playground.
Mila [183]
Is this a trick question, i assume you just add all the number getting 2.4 miles or he is 0 miles away from his house when he completes his jog

6 0
3 years ago
Read 2 more answers
One cube has a volume of 192 cm3, and another has a volume of 375 cm3. How much longer is the edge of the larger cube than that
vesna_86 [32]

Answer:

134

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • By first calculating the angle of LMN, calculate the area of triangle MNL. You must show all your working.
    14·1 answer
  • Assume that the probability of any newborn baby being a boyboy is one half 1 2 and that all births are independent. if a family
    14·1 answer
  • Find the average of these numbers. 23, 24, 27, 25, 26, 23, 21, 32, 29, 30
    15·2 answers
  • an object travels along horizontal straight path at a constant rate. the object travels 1/20 of the length of the pathing 3/4 se
    7·2 answers
  • Find the length of BC.<br> A)8<br> B)12<br> C)16<br> D)18
    6·2 answers
  • Help ASAP please both questions
    12·1 answer
  • Write the equation of the line that passes through the points (9, -2) and (4, 2). Put
    14·1 answer
  • How do you graph y=8x?
    14·2 answers
  • What is the slope of the line that passes through the points (10,3 and (7,0)
    5·1 answer
  • A simple random sample of size individuals who are currently employed is asked if they work at home at least once per week. Of t
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!