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
natka813 [3]
3 years ago
9

Household incomes are normally distributed with a mean of $47,500 and a standard deviation of $12,500. What is the probability o

f having incomes of $60,000
or more?
a) 2.50%
O b) 5.0096
C) 15.87%
od) 7.8096
Mathematics
1 answer:
Romashka [77]3 years ago
4 0

Answer:

Option C: 15.87 is the correct answer

Step-by-step explanation:

Given

Mean = $47500

SD = $12500

We have to find the probability of having $60000 or more

So,

x = $60000

The z-score will be:

z-score = z = \frac{x-mean}{SD}\\z = \frac{60000-47500}{12500}\\= \frac{12500}{12500}\\= 1

Looking in the z-score table, we get

P(Z<60000) = 0.8413

In order to find the probability P(Z>60000) => 1-P(Z<60000)

= 1-0.8413

=0.1587

Converting into percentage: 0.1587*100 = 15.87%

Hence,

Option C: 15.87 is the correct answer

You might be interested in
Quadrilateral ABCD is dilated by a scale factor of 1 over 2 centered around (2, 2). Which statement is true about the dilation?
Musya8 [376]

Answer:

Option (1)

1) Segment B'D' will run through (2, 2) and will be shorter than segment BD.

Step-by-step explanation:

The rest of the question is the attached figure (1).

The statement options are:

1) Segment B'D' will run through (2, 2) and will be shorter than segment BD.

2) Segment B'D' will run through (2, 2) and will be longer than segment BD.

3) Segment B'D' will parallel to segment BD and will be shorter than segment BD.

4) Segment B'D' will be parallel to segment BD and will be longer than segment BD.

==============================================================

See the attched figure (2), which represents Quadrilateral ABCD and the image A'B'C'D'

As shown:

The quadrilateral ABCD with vertices A(1,2), B(2,3), C(4,2) and D(2,1).

Quadrilateral ABCD is dilated by a scale factor of 1 over 2 centered around (2, 2).

So,

The quadrilateral A'B'C'D' will be with vertices:

A'= (1.5,2), B'= (2,2.5), C'= (3,2), D'= (2,1.5)

Comparing the options with the figure (2):

So, the answer is option (1)

1) Segment B'D' will run through (2, 2) and will be shorter than segment BD.

6 0
3 years ago
What is the gcf of 30x^2 and 66x^5?
pantera1 [17]

Answer:

6x^2

Step-by-step explanation:

Express as product of prime factors.

30x^2=2\times 3\times 5\times x^2

66x^5=2\times 3\times 11\times x^5

The greatest common factor is the product of the least powers of the common factors.

The GCF is

2\times 3\times x^2=6x^2

4 0
4 years ago
How do I get the answer to 6x+2=14
Eddi Din [679]

The answer for 6x+2=14 is x=2.

8 0
4 years ago
All polynomials have at least one maximum.<br> O A. True<br> O B. False
Advocard [28]

Answer: B) False

A counter-example would be the cubic polynomial y = x^3 which doesn't have a max or a min. The graph stretches forever in both directions (up and down) indicating that the range is the set of all real numbers.

8 0
3 years ago
What is the slope of the line that
Naily [24]

Answer:

The line has a slope of zero which means the line is a horizontal line.

Step-by-step explanation:

Given that:

The two points are (-3,2) and (4,2)

Slope of a line is given by the formula,

m = \frac{Rise}{Run} = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

Here,

x_{1}=-3,\ y_{1}=2\\x_{2}=4,\ y_{2}=2

Putting these values in formula;

m=\frac{2-2}{4-(-3)} \\m = \frac{0}{4+3}\\m = \frac{0}{7} = 0

Hence,

The line has a slope of zero which means the line is a horizontal line.

4 0
3 years ago
Other questions:
  • What is the value of h(-2)=3x+1 is what
    10·2 answers
  • Justin is training for a hamburger eating competition. He is eventually able to eat 15 hamburgers in 10 minutes. What is justin’
    11·1 answer
  • Carl is wondering if the train he is riding home from school will leave early, on time, or late. The probabilities are as follow
    13·2 answers
  • Write an inequality for each of the following:
    7·1 answer
  • In which subsets does the number square root of 9 belong?
    5·2 answers
  • Factorise the expressions and divide them as directed.​
    14·1 answer
  • PLSS HELP
    14·1 answer
  • When asked to write the prime factorization of 175, a student wrote 7 dotmath 25. Complete the explanation of the error and ente
    15·2 answers
  • Which is an irrational number, 0, the square root of 2, three fourths, or 4 squared
    7·1 answer
  • Suppose a distribution has a mean of 40, and a standard deviation of 5, if 3 is added to each value in the data what is the new
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!