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
ioda
3 years ago
12

Suppose x has a distribution with μ = 40 and σ = 12. (a) If random samples of size n = 16 are selected, can we say anything abou

t the x distribution of sample means? Yes, the x distribution is normal with mean μ x = 40 and σ x = 0.8. Yes, the x distribution is normal with mean μ x = 40 and σ x = 12. Yes, the x distribution is normal with mean μ x = 40 and σ x = 3. No, the sample size is too small. Changed: Your submitted answer was incorrect. Your current answer has not been submitted. (b) If the original x distribution is normal, can we say anything about the x distribution of random samples of size 16? No, the sample size is too small. Yes, the x distribution is normal with mean μ x = 40 and σ x = 3. Yes, the x distribution is normal with mean μ x = 40 and σ x = 12. Yes, the x distribution is normal with mean μ x = 40 and σ x = 0.8.
Mathematics
1 answer:
Temka [501]3 years ago
7 0

Answer:

a: no the sample size is too small

b:  Yes, the distribution is normal with a mean of 40 and standard deviation of 12

Step-by-step explanation:

a:  If n < 30, we need to know that the sample is normally distributed or else we can't determine anything.  When sample sized get very large, they usually resemble normally distributed data sets so we can still make conjectures even if the data isn't officially normally distributed

b: The question tells us that the sample is normally distributed, so even though n < 30, we can still make conjectures about the population

You might be interested in
The sum of three numbers is 8. twice the smaller is 2 less than the largest, while the sum of the largest and smallest is 5. use
Lorico [155]
X + Y + Z = 8
2x = Z - 2
X + Z = 5
X = 1
1 + Y + Z = 8
Y + Z = 6
1 + Z = 5
Z = 4
1 + Y + 4 = 8
5 + Y = 8
Y = 3
The variables are 1, 3, 4.
4 0
3 years ago
Find the balance in an account when $600 is deposited at 3% compounded annually for 2 years.
Debora [2.8K]

Step-by-step explanation:

i belive the the answer would be 10000000

4 0
3 years ago
I need help with this one pls!
Alex73 [517]

Hi there!

\large\boxed{b = \frac{a}{ac - 1}}

We can begin by making each fraction have a common denominator:

If we make each have a common denominator of ab, we get:

\frac{b}{ab} + \frac{a}{ab} = c

Simplify:

\frac{a + b}{ab}  = c

Multiply both sides by ab:

a + b = cab

Move b to the opposite side:

a = cab - b

Factor out b:

a = b(ac - 1)

Divide by (ac - 1):

\frac{a}{ac - 1} = b

4 0
3 years ago
Which of the following relations is a function?
Serga [27]

Answer:

B

Step-by-step explanation:

A is not a function because the same x value is repeated twice with different y values. The same goes for C and D so the answer is C.

6 0
3 years ago
Read 2 more answers
If you died tomorrow, what would you wish you had done?
Vilka [71]
I wouldn’t change anything because that is how I lived my life
6 0
3 years ago
Read 2 more answers
Other questions:
  • On a map, the distance between Greenville and Fairview is 7 1/4 inches. If the map uses a scale of 1/2 inch = 40 miles, what is
    13·1 answer
  • Melanie had 255 dollars to spend on 8 books. After buying them she had 15 dollars. How much did each book cost?
    13·2 answers
  • 8x-19 = -12x+61 What is x?
    15·1 answer
  • Determine the distance between -1 and -7.
    11·2 answers
  • A building has two sizes of apartments Smart in regular the ratio of small apartments to regular apartments is 18 to 7 what perc
    9·1 answer
  • Quadrilateral A B C D is shown. The uppercase right angle, angle A, is 79 degrees.
    5·1 answer
  • Which type of graph would be best for showing the average yearly bonus amounts for employees in different departments of an IT c
    11·1 answer
  • How many solutions does the system have?
    14·2 answers
  • Shenhed finished his math assament in 3/8
    6·1 answer
  • Wesley can use the equation y=3x to calculate how far he has walked, where y represents the number of miles walked, and x repres
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!