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
kicyunya [14]
3 years ago
10

The heights of the pine trees in a certain forest are normally distributed, with a mean of 86 feet and a standard deviation of 8

feet.
Approximately what percentage of the pine trees in this forest are taller than 100 feet?
Mathematics
1 answer:
laiz [17]3 years ago
6 0

Answer:

4%

Step-by-step explanation:

We solve this question using z score formula

z = (x-μ)/σ,

where

x is the raw score = 100 feet

μ is the population mean = 86 feet

σ is the population standard deviation = 8 feet

Hence,

x > 100 feet

z = (100 - 86)/8

z = 1.75

Probability value from Z-Table:

P(x<100) = 0.95994

P(x>100) = 1 - P(x<100) = 0.040059

Converting to Percentage

= 0.040059 × 100

= 4.0059%

Approximately = 4%

Therefore, the percentage of the pine trees in this forest are taller than 100 feet is 4%

You might be interested in
When solving a system by substitution, one should
neonofarm [45]
B, because to substitute for a variable you have to have an equation to substitute first.
6 0
3 years ago
What happens when you celebrate halloween in the spring
kirill [66]

Answer:

the day that immediately proceeds the last and final spring sabbat, ... The fact that Beltane and Samhain happen in unison twice a year lends

Step-by-step explanation:

4 0
3 years ago
you should spend one week worth of pay on rent. she makes 32,000 a year. what is max she should spend
deff fn [24]

Hi!


We know she makes $32,000 a year, but we need to know how much she makes in a week. Which leads us to the question,"How many weeks are in a year?".


There are about 52 weeks in a year.


To found out how much money she makes per week, divide.


money per week

32000/52 = 615.384615


I'm not sure if they want you to round up, or round down, or what, but the exact answer is 615.384615.


Hope this helps! :) -Peredhel

8 0
3 years ago
Which expression is equivalent to 1/3 (5x + 3y) + 2/5y + 7 ?
sveta [45]

Answer:

Step-by-step explanation:

Hello

Which expression is equivalent to 1/3 (5x + 3y) + 2/5y + 7 ?

a. 5/3x + 2/5y + 7

b. 5/3x + 7/5y + 7

c. 15x + 9 2/5y + 7

d. 15x + 2/5y + 7

1/3 (5x + 3y) + 2/5y + 7

= 5/3 x + y + 2/5 y + 7

= 5/3 x + 5/5 y + 2/5 y + 7

= 5/3 x + 7/5 y + 7

Answer : b

8 0
3 years ago
Do all circles have all right angles?
rodikova [14]

Answer: Nope.

Step-by-step explanation: All circles are round and have no corners. Therefore, they cannot have any angles - right angles included.

8 0
3 years ago
Read 2 more answers
Other questions:
  • A bag of rice weights 3.18 lbs find its mass in kilograms
    14·1 answer
  • Problem page the sum of two numbers is 67 and the difference is 11 . what are the numbers?
    7·1 answer
  • Multiplies to -1120 adds to 3
    12·1 answer
  • Find the product.<br> (z − 2)(z + 2)
    14·2 answers
  • A 20 foot ladder is leaning against the side of a building. The bottom of the ladder is 4 feet from the wall. How many feet abov
    8·1 answer
  • The head track coach for PCTVS has a big track meet coming up. He knows that his biggest rival is Clifton and the entire track m
    14·1 answer
  • Can someone please help me with this!! it late and need to turn it in​
    6·1 answer
  • If two angles are ​complementary ​angles and they measure m​ ∠1=(x + 5)​ and ​m∠2=(5x + 13)​. Find x and the measure for both an
    8·1 answer
  • What is the volume of a hemisphere with a radius of 39.4ft, rounded to the nearest tenth of a cubic foot?
    8·2 answers
  • A small class has 9 students, 3 of whom are girls and 6 of whom are boys. The teacher is going to choose two of the students at
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!