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
Brilliant_brown [7]
2 years ago
10

A livestock company reports that the mean weight of a group of young steers is 1143 pounds with a standard deviation of 88 pound

s. Based on the model ​N(1143​,88​) for the weights of​ steers, what percent of steers weigh
-Under 1200
-Between 1100 and 1250 pounds?
Mathematics
1 answer:
malfutka [58]2 years ago
6 0

Answer:

<em>a) P(x<1200)=74.14%</em>

<em>b) P(1100<X<1250)=57.54%</em>

Step-by-step explanation:

<u>Normal Distribution</u>

The normal distribution, also known as the bell curve, is a distribution that occurs naturally in many situations of life. We use the model N(\mu,\sigma) to understand the behavior of some real-life variables. Where \mu is the mean value and \sigma is the standard deviation.

In our case, we have

\mu=1143,\ \sigma=88

And are required to find the percentage of steers whose weigh lie within a given range. We must use some sort of table or digital means to compute the values because the normal distribution cannot be calculated directly by a formula. We use the NORMDIST (or NORM.DIST) formula for Excel which gives us the left tail of the area behind the bell curve, i.e. the cumulative percentage for a give value of X. The formula has the form

NORM.DIST(x,mean,standard_dev,cumulative)

a) X<1200

The formula is used with the following parameters

NORM.DIST(1200,1143,88,true)

and we get

P(X

b) We need to compute P(1100<X<1250). To do this, we calculate both left tails and the subtract them

NORM.DIST(1100,1143,88,true)=0.3125

NORM.DIST(1250,1143,88,true)=0.8880

P(1100

\boxed{P(1100

You might be interested in
PLEASE HELP ASAP 30 POINTS!!!
Helen [10]

Answer:

a=1, b=2, c=5, d=1, e=6

Step-by-step explanation:

\frac{1}{2} \times (2x+4)(x+3)=(x+2)(x+3)=x^2+5x+6\\

So a=1, b=2, c=5, d=1, e=6

7 0
2 years ago
What is the value of Y ?
gtnhenbr [62]

Answer:

y=7

Step-by-step explanation:

Since y "b" of the triangle is x and the hypotenuse is 2x, you can divide 14 by 2 and get 7, the answer.

7 0
3 years ago
PLEASE HELP ME!!! I WILL GIVE ALL THESE POINTS HELP MEEE!!!!!
BlackZzzverrR [31]
Vertical angles are congruent due to the fact that they intersect. If they did not, they would in fact be parallel. (last section)
8 0
3 years ago
A pack of snack bars includes 2 blueberry bars, 3 chocolate bars, and 5 cherry bars. What is the ratio of the number of blueberr
scoundrel [369]

Answer:

2:5

Step-by-step explanation:

im god

4 0
2 years ago
Read 2 more answers
Determine the arithmetic sequence if the fourth term is negative six and the eleventh term is negative thirty four
ICE Princess25 [194]
An arithmetic sequence takes the form

a_n=a_{n-1}+d

where d is the common difference between terms. You can solve for a_n in terms of any of the previous terms of the sequence:

a_n=a_{n-1}+d\implies~a_n=a_{n-2}+2d\implies~a_n=a_{n-3}+3d\implies\cdots\implies~a_n=a_{n-k}+kd

for some integer 1\le k\le n-1

Continuing in this way, you know that the sequence can be defined explicitly in terms of the first term a_1

a_n=a_1+(n-1)d

Given that the 4th term is a_4=-6 and the 11th term is a_{11}=-34, you have the following system of equations.

\begin{cases}-6=a_1+(4-1)d\\-34=a_1+(11-1)d\end{cases}

Solving this system for the two unknowns yields a_1=6 and d=-4.

So, the sequence is given explicitly by

a_n=6+(n-1)(-4)=-4n+5
3 0
3 years ago
Other questions:
  • What can you do when the unit prices for two comparable items are listed using different units of Measure?
    7·1 answer
  • How do I find the perimeter of a polygon?
    8·1 answer
  • What term applies to a line that intersects two other lines?
    9·1 answer
  • Find the root of (M^3)+(M^2)-2=0. Show steps.
    12·1 answer
  • Help please thanks :)
    5·2 answers
  • How does the function from the table below compare to the function above?​
    6·2 answers
  • The following points are dilated at a center at point C by each of the following scale factors.
    9·1 answer
  • The price of 4 donuts and 2 croissants is $10. The price of 2 donuts and 3 croissants is $9. How much does 1 donut and 1 croissa
    9·1 answer
  • Can someone plz help? It's algebra, and if you cant help, plz don't answer.
    8·2 answers
  • The sum of the digits of a three digit number is 19. The second digit is one more than the first digit. The third
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!