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
Inessa [10]
2 years ago
9

Assume the random variable x is normally distributed with mean μ = 80 and standard deviation σ = 4. Find the indicated probabili

ty.
P(x < 72) = _____ (round to four decimal places as needed).
Mathematics
1 answer:
Schach [20]2 years ago
6 0

Answer:

0.2278

Step-by-step explanation:

z = (x-μ)/σ,

where x is the raw score

μ is the population mean

σ is the population standard deviation

z => 72 - 80/4

= -2

Probability value from Z-Table:

P(x ≤ 72) = P(x = 72) => P(x < 72)

0.02275

Approximately =>0.2278

You might be interested in
6. If you spun the spinner below, what are the odds that you will spin an
denis23 [38]

If you mean that is a 4 digit number then here is your answer.

Answer:

1:1

Step-by-step explanation:

So there is 1000 to 9999. That includes 9999-999= 9000 numbers. Since each number it is either a odd number or an even number, we can say that it is 1:1 There would be 4500 odd and 4500 even numbers. Every even number is followed by an odd number. for example: 1000-1001 1002-1003 1004-1005

so on so you would get to the point that you get to 9998-9999

Hope it helped you!

8 0
2 years ago
I have 8 pennies and some quarters, nickels, and dimes. The number of pennies plus nickels equals the number of dimes. I have 3
GenaCL600 [577]

The answer is D. 10 nickels

3 0
2 years ago
Read 2 more answers
Given a polynomial f(x), if (x + 5) is a factor, what else must be true?
PolarNik [594]
Rule: If x-k is a factor of p(x), then p(k) = 0. This is a special case of the remainder theorem.

Using that rule, we can see that x+5 is really x-(-5) so k = -5. 

Therefore,

p(k) = 0
p(-5) = 0

so the answer is choice D. 
4 0
3 years ago
What is 3% in decimal form
AfilCa [17]
To convert a decimal into a percentage, first we have to convert it into fractional form.  

Because percentages are out of 100, the resulting fraction would be 3/100.

Next, to find the decimal, we would just divide the fraction (numerator divided by denominator).

3 % = 3/100 = 0.03
8 0
2 years ago
Read 2 more answers
6x + 26x - 10 = 8(4x + 10)<br><br> how many solutions?
yuradex [85]
The answer is no solutions
4 0
2 years ago
Read 2 more answers
Other questions:
  • A special deck of cards consists of 5 red cards, 20 blue cards, and 25 green cards. Svetlana selects 1 card from the special dec
    9·1 answer
  • Use the grid to draw a rectangle with an area of 1,125 square units ad a side of 25 units
    12·1 answer
  • Which rational number must be added to3\7to get -3\4 ?
    14·1 answer
  • Find the output please help
    10·2 answers
  • What is add 2x-1 to 5x+ 4? Thanks
    7·2 answers
  • Carol is standing 8 feet from a lamppost. The angle of elevation from her eyes to the top of the lamppost is 20o, and the angle
    9·1 answer
  • The number of students enrolled at a college is 17,000 and grows 6% each year.
    6·1 answer
  • What 2 fingers should you use to properly check your pulse?
    6·2 answers
  • using integer to describe the situation 12 protons and an atom blank 18 electrons around an atom blank​
    9·1 answer
  • Find the domain of the following expression 15 - √(x+2)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!