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
slega [8]
2 years ago
12

A news article estimated that only 5% of those age 65 and older who prefer to watch the news, rather than to read or listen, wat

ch the news online. This estimate was based on a survey of a large sample of adult Americans. Consider the population consisting of all adult Americans age 65 and older who prefer to watch the news, and suppose that for this population the actual proportion who prefer to watch online is 0.05. A random sample of n = 100 people will be selected from this population and p, the proportion of people who prefer to watch online, will be calculated.
(a) What are the mean and standard deviation of the sampling distribution of p? (Round your standard deviation to four decimal places.
(b) Is the sampling distribution of p approximately normal for random samples of size n 100? Explain.
i. The sampling distribution of p is approximately normal because np is less than 10.
ii. The sampling distribution of p is approximately normal because np is at least 10.
iii. The sampling distribution of p is not approximately normal because np is less than 10
iv. The sampling distribution of p is not approximately normal because np is at least 10
v. The sampling distribution of p is not approximately normal because n(1 - p) is less than 10.
(c) Suppose that the sample size is n = 400 rather than n = 100, what are the values for the mean and standard deviation when n=400?
Does the change in sample size affect the mean and standard deviation of the sampling distribution of p? If not, explain why not.
i. When the sample size increases, the mean increases.
ii. When the sample size increases, the mean decreases.
iii. When the sample size increases, the mean stays the same.
iv. The sampling distribution is always centered at the population mean, regardless of sample size.
v. When the sample size increases, the standard deviation increases.
vi. When the sample size increases, the standard deviation decreases.
Mathematics
1 answer:
mamaluj [8]2 years ago
7 0

Answer:

3.25

Step-by-step explanation:

You might be interested in
Please helppp plsssss i have a few minsssss
dedylja [7]

Answer:

14 m.

Step-by-step explanation:

sana naka tulong ang sagot ko

4 0
2 years ago
Plzzz help me I am timed plzzzzz
drek231 [11]
Your answer would be D or 6
3 0
3 years ago
A test has a 50 questions. Two are essay and the remaining are multiple choice and fill in the blank at a 5:1 ratio respectively
o-na [289]

Answer:If the ratio is 5:1 doesn’t mean that it will be in order but there will be 8 fill in the blank and 40 multiple choice

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
HELPPPPPPPPP! Please asap
Studentka2010 [4]

Answer:

Step-by-step explanation:

(f+g)(x) = f(x) + g(x) = 3x-1 +x²-6

(f+g)(x) = x² +3x -5 .....( answer : B )

3 0
2 years ago
Which of the following is equal to 7 1/3?<br> will give brainlist
Anestetic [448]

Step-by-step explanation:

c is the correct answer

7 0
3 years ago
Other questions:
  • Y and X have a proportional relationship and Y equals five when X equals four what is the value of X when Y equals eight
    5·1 answer
  • Will someone please tell me the values of X and Y ?
    14·1 answer
  • 4x-6y-8=0 in function form
    11·1 answer
  • What is the exact volume of the sphere
    8·2 answers
  • Find the value of each variable.<br> 1. X<br> =
    5·1 answer
  • Clara's suitcase weighs 58
    15·1 answer
  • I’m stuck on this problem<br> Pls help ASAP
    13·2 answers
  • Lynnette can wash 95 cars in 5 days. How many xars does she wash each day
    7·2 answers
  • What is a correct interpretation of the​ statement, "the ratio of dogs to cats is 7 to​ 2"?
    14·2 answers
  • In this problem, substitute (x+1) in place of y in the second equation.<br>​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!