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
Romashka [77]
2 years ago
15

Who is right and why are they right?

Mathematics
1 answer:
ElenaW [278]2 years ago
8 0
Its positive for the supermarkets oweners
You might be interested in
A veterinary researcher takes a random sample of 60 horses presenting with colic. The average age of the random sample of horses
Licemer1 [7]

Answer:

Probability that a sample mean is 12 or larger for a sample from the horse population is 0.0262.

Step-by-step explanation:

We are given that a veterinary researcher takes a random sample of 60 horses presenting with colic. The average age of the random sample of horses with colic is 12 years. The average age of all horses seen at the veterinary clinic was determined to be 10 years. The researcher also determined that the standard deviation of all horses coming to the veterinary clinic is 8 years.

So, firstly according to Central limit theorem the z score probability distribution for sample means is given by;

                    Z = \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } } ~ N(0,1)

where, \bar X = average age of the random sample of horses with colic = 12 yrs

            \mu = average age of all horses seen at the veterinary clinic = 10 yrs

   \sigma = standard deviation of all horses coming to the veterinary clinic = 8 yrs

         n = sample of horses = 60

So, probability that a sample mean is 12 or larger for a sample from the horse population is given by = P(\bar X \geq 12)

   P(\bar X \geq 12) = P( \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } } \geq \frac{12-10}{\frac{8}{\sqrt{60} } } ) = P(Z \geq 1.94) = 1 - P(Z < 1.94)

                                                 = 1 - 0.97381 = 0.0262

Therefore, probability that a sample mean is 12 or larger for a sample from the horse population is 0.0262.

4 0
3 years ago
Solve the following equation then place the correct number in the box provided. X/3 - 4 = 10
ivann1987 [24]
X = 42

x/3 - 4 = 10
+ 4 +4
x/3 = 14
•3 •3
x = 42
4 0
3 years ago
What would be 12% of 40
weeeeeb [17]

Hello,

Answer:

4,8

Step-by-step explanation:

<u>what would be 12% of 40 ? </u>

12% × 40 = 12/100 × 40 = 0,12 × 40 = 4,8

3 0
2 years ago
Solve 2(3x-5)-3(6-4x)+(15x+3)
nadya68 [22]

Answer:

33x-25

Step-by-step explanation:

2(3x-5)-3(6-4x)+(15x+3)

6x-10-18+12x+15x+3

21x+12x-10-18+3

=33x-25

5 0
3 years ago
Read 2 more answers
A) give stating reasons five other angles each equal to x<br>b) prove that AECF is a parallelogram ​
Gennadij [26K]

Simple Proof:

a) In the image, we know that ABCD is a parallelogram and that means opposite angel measures should be the same. We know that angel DCB is made up by angel 1 and 2, and angel DAB and DCB are equal and angel DAB is made up by angel 1 and <em>x</em>. So now we can conclude that angel <em>x</em> is equal to angel 2.

b) According to the definitions of a parallelogram, opposite angel measures have to be the same, while AECF have angle 1 to angel 1 and angel 2 to angel 1. We can conclude that AECF is <u>NOT</u> a parallelogram. (Sorry, you didn't give me the full question so some information remains unclear. )

7 0
3 years ago
Other questions:
  • Postal regulations specify that a parcel sent by priority mail may have a combined length and girth of no more than 144 in. Find
    7·1 answer
  • the volume of a square pyramid with height 2.4cm is 3.2cm. what is the width of the base of the pyramid?
    8·1 answer
  • What is the range of y=csc(x)
    14·2 answers
  • Your friend purchased a medium pizza for 10.31 with a 30% off coupon. What is the price without the coupon
    5·2 answers
  • In ΔKLM, the measure of ∠M=90°, LK = 97, ML = 65, and KM = 72. What is the value of the sine of ∠L to the nearest hundredth?
    12·1 answer
  • johanna prepares a mixture of salad mixed with mayonnaise carrots cucumber lettuce and cheese. what type of mixture divine salad
    9·1 answer
  • HELP!!!
    10·1 answer
  • Shaneya purchased a membership to play basketball at her local gym. The membership costs $450 for the year, plus she pays $10 to
    5·1 answer
  • Dan thinks of a number
    9·1 answer
  • Select the correct answer.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!