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
Oksi-84 [34.3K]
3 years ago
13

The operating costs for each machine for one day have an unknown distribution with mean 1610 and standard deviation 136 dollars.

A sample, with size n=45, was randomly drawn from the population. Using the Central Limit Theorem for Means, what is the standard deviation for the sample mean distribution? Select the correct answer below: 3.02 20.27 25.34 30.41 34.47 136.00
Mathematics
1 answer:
BabaBlast [244]3 years ago
3 0

Answer:

20.27

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, the sample means with size n of at least 30 can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

Using the Central Limit Theorem for Means, what is the standard deviation for the sample mean distribution?

This is s when \sigma = 136, n = 45. So

s = \frac{136}{\sqrt{45}} = 20.27

So the correct answer is:

20.27

You might be interested in
Can someone help me with this question? Thank you!
BARSIC [14]

Answer:

See the attachment!

8 0
2 years ago
Classify the two given samples as independent or dependent. sample​ 1: the scores of 20 students who took the act sample​ 2: the
topjm [15]

Classify the two given samples as independent or dependent.

sample​ 1: the scores of 20 students who took the act

sample​ 2: the scores of 20 different students who took the sat

Solution: The two given samples are independent samples because in both the samples, the scores of one student will not affect the scores of other students.

Independent samples are samples that are selected randomly so that its observations do not depend on the values other observations.


3 0
3 years ago
Twice the difference of x and 7, is -23
iren2701 [21]

Answer:

Step-by-step explanation:

Cheese covered with poor

6 0
3 years ago
Read 2 more answers
Help plz??????????????????????????????
Juliette [100K]
I would go with -15 that’s what I came up with

8 0
3 years ago
Ariel left her home at 9 a.m., driving at 45 mph. At 11 a.m. her brother left the home and started after her at 60 mph. At what
Vlada [557]

Answer:

5:00 pm

Step-by-step explanation:

Let

x -----> the umber of hours

y ----> the total distance in miles

we know that

The distance is equal to the speed multiplied by the time

Find out the distance traveled by Ariel at 11:00 am

11:00 am-09:00 am=2 hours

45(2)=90 miles

so

<em>Ariel's linear equation is</em>

y=45x+90 ----> equation A

<em>Ariel's brother linear equation is</em>

y=60x ----> equation B

Equate equation A and equation B

60x=45x+90

Solve for x

60x-45x=90

15x=90

x=6\ hours

Adds 11:00 am + 6 hours=17:00 =5:00 pm

6 0
3 years ago
Other questions:
  • Check all of the points that are solutions!
    11·1 answer
  • Can you please help with algebra question #6
    9·2 answers
  • I need help with this magic number puzzle
    7·1 answer
  • Help Please ! It would mean a lot really (also have more questions on my page)
    7·1 answer
  • If the product of the two slopes of two lines equals -1, then the lines are ?
    7·1 answer
  • Mason pulled his hamstring while at track practice and received an MRI. His medical bills totaled
    7·1 answer
  • In 2006, there were 1,020,000,000 people worldwide using the Internet.
    7·1 answer
  • Help PLS!!! DONT MAKE ANY CAP PLEASE!!
    15·1 answer
  • Find the slope of y=1/3x + 2/5
    8·1 answer
  • Use the diagram to find the value of "x" so that △AOC ≅ △ZFD by HL.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!