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
spayn [35]
3 years ago
12

Suppose the heights of the members of a population follow a normal distribution. If the mean height of the population is 68 inch

es and the standard deviation is 4 inches, 95% of the population will have a height within which of the following ranges?

Mathematics
2 answers:
Veseljchak [2.6K]3 years ago
5 0

Answer:

60 -76 is the range

Step-by-step explanation:

As the graph shows, if we are in 2 standard deviations of the mean, we are in (34.1 + 13.6) *2 = 47.7*2 = 95.4 %

Our mean is 68

2  standard deviations is 2 * 4 = 8

68-8 = 60

68 * 8 = 76

We need to be between 60 and 76 to have at 95% confidence interval


Irina18 [472]3 years ago
4 0

The empirical rule states that at 95% the measurements would be within 2 standard deviations of the mean.


You are given a mean of 68 inches and a standard deviation of 4.

2 times the standard deviation = 2 x 4 = 8

So 95% of the heights would be between 68-8 = 60 inches and 68+8 = 76 inches.

You might be interested in
K (n) = 4n – 4; Find k (8)<br> 28<br> 4<br> -32<br> -24<br> The answer
Maurinko [17]

Answer:

Step-by-step explanation:

k(8) = 4(8) - 4

     = 32 - 4

     = 28

answer is A

8 0
3 years ago
f(x)= -4x^2+10x-8 what is the value of the discriminant of f how many distinct real number zeros does f have
Mazyrski [523]

Answer:

Step-by-step explanation:

The function is f(x) = -4x²+10x-8

Let Δ be our the dicriminant

  • Δ= b²-4ac
  • b = 10
  • a = -4
  • c = -8
  • Δ = 10²-4*(-4)(-8)
  • Δ = 100-128
  • Δ = -28

The value of the discriminant is -28 and since it is negative this function has no real zeroes

4 0
3 years ago
Please help me (It's for a really important grade)
Sholpan [36]

Answer:

4/5

Step-by-step explanation:

Sin = Opposite / Hypotenuse

Note that hypotenuse = longest side

We want to find sinФ

The opposite side length of angle "Ф" has a length of 8 and the longest side or hypotenuse has a length of 10

So sinФ would equal 8/10 which can be simplified to 4/5

7 0
2 years ago
3x + 12 = -3 What is the value of X
Blizzard [7]

Answer:

x = -5

Step-by-step explanation:

i took algebra a couple years ago :)

4 0
3 years ago
Read 2 more answers
Write 111 as a decimal.
vagabundo [1.1K]

Answer:

So, 7 is the decimal equivalent of the binary number 111

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • The graphs of functions f(x) and g(x) = f(x) + k are shown below:
    15·2 answers
  • Will give BRAINLIEST for the CORRECT answer.
    13·2 answers
  • Is 4/8 closer to 0 or 1 and why
    7·2 answers
  • How to write domain and range
    5·1 answer
  • 400 written as a product of its prime factors is 2×2×2×2×5×5.write 800 as a product of its prime factors
    11·2 answers
  • What is the maximum answer of the equation <br><img src="https://tex.z-dn.net/?f=6%20%7Bx%7D%5E%7B2%7D%20%20%2B%2011x%20%2B%203%
    11·1 answer
  • A grocery store sells roasted almonds in bulk. What is the price per pound for the almonds?
    7·1 answer
  • Can you please HELP ME!! I have done question a but i need help on question b. For some people it may be easy but...
    15·2 answers
  • Suppose you are designing a cardboard box that must have a volume of 27 cubic feet. The cost of the cardboard is $0.21 per squar
    7·1 answer
  • Help me pls <br> 4/3(6/4/5)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!