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
yanalaym [24]
3 years ago
5

In an all boys school, the heights of the student body are normally distributed with a mean of 69 inches and a standard deviatio

n of 3 inches. Using the empirical rule, determine the interval of heights that represents the middle 95% of male heights from this school.
Mathematics
1 answer:
slega [8]3 years ago
7 0

Answer:

Two intervals are 63 and 75

Step-by-step explanation:

Given:

Mean of students (μ) = 69 inches

Standard deviation (σ) = 3 inches μ

Find:

Interval of heights (95%) using empirical rule

Computation:

Interval of heights (95%) using empirical rule:

⇒ μ – 2σ = 69 - 2(3)

⇒ μ – 2σ = 69 - 6

⇒ μ – 2σ = 63

⇒ μ + 2σ = 69 + 2 (3)

⇒ μ + 2σ = 69 + 6

⇒ μ + 2σ =  75

Two intervals are 63 and 75

You might be interested in
What is the value of x? <br> -2/7x+6+1/7x=18 <br> x=
Alenkinab [10]
- \frac{2}{7} x + 6 + \frac{1}{7} x = 18

First, simplify \frac{2}{7} x to \frac{2x}{7} / Your problem should look like: -\frac{2x}{7} + 6 + \frac{1}{7} x = 18
Second, simplify \frac{1}{7} x to \frac{x}{7} / Your problem should look like: - \frac{2x}{7} + 6 + \frac{x}{7} = 18
Third, simplify - \frac{2x}{7} + 6 + \frac{x}{7} to - \frac{x}{7} + 6 / Your problem should look like: -\frac{x}{7} + 6 = 18
Fourth, regroup terms. / Your problem should look like: 6 - \frac{x}{7} = 18
Fifth, multiply both sides by 7. / Your problem should look like: 42 - x = 126
Sixth, subtract 42 from both sides. / Your problem should look like: -x = 126 - 42
Seventh, simplify 126 - 42 to 84. / Your problem should look like: -x = 84
Eighth, multiply both sides by -1. / Your problem should look like: x = -84

Answer: x = -84

4 0
3 years ago
4-0.25g+0.5h= when g=10, h=5
neonofarm [45]
The answer to this problem is 4
4 0
3 years ago
Read 2 more answers
If the scale is 3cm to 8 km, what is 5 cm?
IgorC [24]

Answer:

Step-by-step explanation:

3 cm=8 km

1cm=8/3 km

5 cm=8/3×5=40/3 =13 1/3 km

6 0
2 years ago
Find the value of x.
Slav-nsk [51]

Answer:

  x = 53

Step-by-step explanation:

The sum of the angle measures in a triangle is 180°:

  91° + 36° + x° = 180°

  x° = 180° -127° = 53°

  x = 53

6 0
3 years ago
A scatterplot is produced to compare the number of hours that students study to their test scores. There are 25 data points, eac
Airida [17]
The answer would be C) As the number of hours of studying increases, test scores increase because the scatterplot has a cluster that increases from left to right.

Any questions? Ask me in the comments bellow.
Hope this helps. :)
5 0
3 years ago
Read 2 more answers
Other questions:
  • If a = 5, b = 5 and c = 10, what is the value of ac / 2b ?
    11·1 answer
  • Which expression is equivalent to this one?
    15·2 answers
  • The sum of two consecutive intergers is -49.
    9·1 answer
  • Given ABCD, solve for x.
    15·2 answers
  • Faye has 180 yellow beads and 12 packets. Faye decided to double the number of yellow beads in the mix. How many packets will sh
    9·1 answer
  • Find the reference angle given: t = −76°
    5·2 answers
  • The ratio between the areas of two similar polygons is 3i4. What is the ratio between the lengths of their corresponding sides
    9·1 answer
  • Help me plsssssssssssss!Of the 420 students enrolled in advanced math at college, only 30% are first-year students.
    6·1 answer
  • The following data represents the amount of snow snow that fell in a week.
    11·1 answer
  • Please answer so I dont fail this semester ​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!