subject
Mathematics, 17.03.2020 17:32 Anisanene

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, watch 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. what are the mean and standard deviation of the sampling distribution of p? (Round your standard deviation to four decimal places.) mean standard deviation (a) (b) Is the sampling distribution of p approximately normal for random samples of size n 100? Explain. O The sampling distribution of p is approximately normal because np is less than 10. The sampling distribution of p is approximately normal because np is at least 10. O The sampling distribution of p is not approximately normal because np is less than 10 O The sampling distribution of p is not approximately normal because np is at least 10 O 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 standard deviation to four decimal places.) mean standard deviation 400? (Round your Does the change in sample size affect the mean and standard deviation of the sampling distribution of p? If not, explain why not. (Select all that apply.) O When the sample size increases, the mean increases. O When the sample size increases, the mean decreases. When the sample size increases, the mean stays the same. The sampling distribution is always centered at the population mean, regardless of sample size. O When the sample size increases, the standard deviation increases. O When the sample size increases, the standard deviation decreases.

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 22.06.2019 00:00
The function f(x)= x5+ ( x + 3)2 is used to create a table. if x = -1 then what is f(x)?
Answers: 1
question
Mathematics, 22.06.2019 04:30
Acertain drug is made from only two ingredients: compound a and compound b. there are 3 millimeters of compound a used for every 4 millimeters of compound b. if a chemist wants to make 693 milliliters of the drug, how many milliliters of compound a are needed?
Answers: 1
question
Mathematics, 22.06.2019 07:00
Arectangular field has a length that is 90 feet more than twice the width of the field. if the area of the field is 58,500 square feet, what is the width of the field a. 390 feet b. 201 feet c. 132 feet d. 150 feet
Answers: 1
question
Mathematics, 22.06.2019 08:00
X=7^y how can you rewrite this equation in y = form ?
Answers: 1
You know the right answer?
A news article estimated that only 5% of those age 65 and older who prefer to watch the news, rather...
Questions
question
Mathematics, 27.08.2019 06:30
question
Mathematics, 27.08.2019 06:30
Questions on the website: 13722367