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
nasty-shy [4]
2 years ago
15

The mean per capita consumption of milk per year is 138 liters with a standard deviation of 28 liters. if a sample of 60 people

is randomly selected, what is the probability that the sample mean would be less than 132.25 liters? round your answer to four decimal places.
Mathematics
1 answer:
bulgar [2K]2 years ago
8 0
The probability that the the sample mean would be less than x=132.25 will be calculated as follows:
z=(x-σ)/μ
μ- mean
σ- standard deviation
z=(132.25-138)/28=-0.2054
thus:
P(X≤x)=0.4207=42.07%
You might be interested in
What is the slope of a line that is parallel to the line represented by the equation 3x+4y=12?
mash [69]

Slope-intercept form is:

y = mx + b

"m" is the slope, "b" is the y-intercept (the y value when x = 0)

(there is probably another way to do this, but I will be doing it this way)


Isolate the "y" in the equation

3x + 4y = 12       Subtract 3x on both sides

4y = 12 - 3x        Divide 4 on both sides

y=3-\frac{3}{4}x  or   y=-\frac{3}{4} x+3   The slope is -3/4


For lines to be parallel, they have to have the SAME slope. The given line's slope is -3/4, so the slope of the parallel line is also -\frac{3}{4}

8 0
3 years ago
A study has shown that the daily amount of milk produced by a dairy cow is normally distributed, with a mean of 6.2 gallons and
V125BC [204]

Answer:

5.5 gallons to 6.9 gallons

Step-by-step explanation:

Daily a cow

produces a mean of 6.2 gallons (average

of 6.2 gallons, meaning they already

found the mean, "averaged" it out for

you) with a deviation of 7 gallons ("give

or take" .7 gallons). On any given day

(throw these words out) 68% of the cows

(don't need this information to answer

the question either, thrown in to confuse

you) will produce an amount of milk

within which of the following ranges?

Just subtract the deviation ("give or

take number").7 gallons from the mean

(average (already determined)) 6.2

gallons which is 5.5 gallons THEN add

the deviation ("give or take number").

7 gallons to the mean (average (already

determined)) 6.2 gallons which is 6.9

gallons. Your answer is A 5.5 gallons to

6.9 gallons. You don't even have to go

crazy on the math on this question you

can rule them all out but A immediately

with subtracting .7 from 6.2.

hope it helps!

4 0
3 years ago
Read 2 more answers
What is 3/4 divided by 12/25?<br> Please help!
Alona [7]
<h2>Answer:</h2><h2>1 9/16 or 1.5625</h2><h2></h2><h2>Hope this helps!!</h2>
7 0
2 years ago
Read 2 more answers
HELP ASAP <br> What is the slope of the line on the graph?
ollegr [7]
The slope of this line is -1/6.  

2 Point:     (6,2)         (-6,6)
                   x₁ y₁         x₂ y₂
       

Remember: 
  
    rise          change in y          y₂ - y₁          6 - 2            4
 ---------- =  ------------------- = ------------- = ----------- = ----------
    run            change in x         x₂ - x₁         -6 - 6          -12


Simplify 4/-12

     4 ÷ 4             1
  -------      = ------------- = -1/3
   -12 ÷ 4          -3

The slope of the line is -1/3.






3 0
3 years ago
What times what gets you to 41
Viktor [21]

Answer:

1 x 41 = 41............….…...

7 0
2 years ago
Other questions:
  • . (16/4) + (10-3)<br> Plzz I need an answer quickly. I really would appreciate it
    15·1 answer
  • PLZZZZZ HELP ME HELP A DUMB CHILD OUT
    14·1 answer
  • Help please 10 minutes!!!!!!!!!
    7·1 answer
  • Please please answer this correctly please label the numbers correctly and please write down your answers correctly
    6·1 answer
  • HELP ASAP PLEASE!!!!!!! WILL MARK BRAINLIEST
    9·2 answers
  • What is 6,374 in expanded form?
    9·2 answers
  • 2/3 divided by 5/9
    12·2 answers
  • Someone please solve this. If m(x)= x^3 - 5x + 7 &amp; f(x)= 2x - 3 What does: m(-3) - f(-3)
    15·1 answer
  • 14-
    5·1 answer
  • Express this number in scientific notation: 0.0002077
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!