Question

The 2015 American Time Use survey contains data on how many minutes of sleep per night...

The 2015 American Time Use survey contains data on how many minutes of sleep per night each of 10,900 survey participants estimated they get. The times follow the Normal distribution with mean 529.9 minutes and standard deviation 135.6 minutes. An SRS of 100 of the participants has a mean time of ?¯=514.4 minutes. A second SRS of size 100 has mean ?¯=539.3 minutes. After many SRSs, the values of the sample mean ?¯ follow the Normal distribution with mean 529.9 minutes and standard deviation 13.56 minutes.

(a) What is the population?

A. The population is 135.6 million respondents to the American Time Use Survey.

B. The population is the 100 participants in the SRS.

C. The population is the 10,900 respondents to the American Time Use Survey.

D. The population is all Americans who sleep through the night.

(b) What values does the population distribution describe? What is this distribution?

A. The population distribution describes the minutes of sleep per night for the individuals in this population. This distribution is Normal with mean 529.9 minutes and standard deviation 13.56 minutes.

B. The population distribution describes the minutes of sleep per night for the individuals in this population. This distribution is Normal with mean 529.9 minutes and standard deviation 135.6 minutes.

C. The population distribution describes the distribution of the average sleep time for 100 randomly selected individuals from this population. This distribution is Normal with mean 514.4 minutes.

D. The population distribution describes the distribution of the average sleep time for 100 randomly selected individuals from this population. This distribution is Normal with mean 529.9 minutes and standard deviation 13.56 minutes.

(c) What values does the sampling distribution of ?¯ describe? What is the sampling distribution?

A. The sampling distribution describes the distribution of the average sleep time for 100 randomly selected individuals from this population. This distribution is Normal with mean 514.4 minutes.

B. The sampling distribution describes the distribution of the average sleep time for 100 randomly selected individuals from this population. This distribution is Normal with mean 529.9 minutes and standard deviation 135.6 minutes.

C. The sampling distribution describes the distribution of the average sleep time for 100 randomly selected individuals from this population. This distribution is Normal with mean 529.9 minutes and standard deviation 13.56 minutes.

D. The sampling distribution describes the minutes of sleep per night for the individuals in this population. This distribution is Normal with mean 529.9 minutes and standard deviation 135.6 minutes.

Homework Answers

Answer #1

a)
option C)
C. The population is the 10,900 respondents to the American Time Use Survey.

b)
option B)
B. The population distribution describes the minutes of sleep per night for the individuals in this population. This distribution is Normal with mean 529.9 minutes and standard deviation 135.6 minutes.

c)
option C)
C. The sampling distribution describes the distribution of the average sleep time for 100 randomly selected individuals from this population. This distribution is Normal with mean 529.9 minutes and standard deviation 13.56 minutes.

Please rate

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In a recent survey, the total sleep time per night among college students was approximately Normally...
In a recent survey, the total sleep time per night among college students was approximately Normally distributed with mean μ = 6.76 hours and standard deviation σ = 1.24 hours. You plan to take an SRS of size n = 120 and compute the average total sleep time. (a) What is the standard deviation for the average time? (Round your answer to three decimal places.) hours (b) Use the 95 part of the 68–95–99.7 rule to describe the variability of...
2. According to the American Time Use Survey, the typical American spends 154.8 minutes per day...
2. According to the American Time Use Survey, the typical American spends 154.8 minutes per day watching television. A survey of 50 internet users results in a mean time watching television per day of 128.7 minutes with a standard deviation of 46.5 minutes. Test whether the internet users spend less time watching television at 1% level of significance.
According to the American Time Use Survey, the typical American spends 153.9 minutes (2.57 hours) per...
According to the American Time Use Survey, the typical American spends 153.9 minutes (2.57 hours) per day watching television. A survey of 50 Internet users results in a mean time watching television per day of 127.9 minutes, with a standard deviation of 46.9 minutes. Conduct the appropriate test to determine if Internet users spend less time watching television at the ⍶ = 0.05 level of significance.
A class survey in a large class for first-year college students asked, "About how many minutes...
A class survey in a large class for first-year college students asked, "About how many minutes do you study on a typical weeknight?" The mean response of the 284 students was x⎯⎯⎯x¯ = 138 minutes. Suppose that we know that the studey time follows a Normal distribution with standard deviation σσ = 65 minutes in the population of all first-year students at this university. Regard these students as an SRS from the population of all first-year students at this university....
The results of a national survey showed that on average, adults sleep 7.2 hours per night....
The results of a national survey showed that on average, adults sleep 7.2 hours per night. Suppose that the standard deviation is 1.4 hours and that the number of hours of sleep follows a bell-shaped distribution. If needed, round your answers to two decimal digits. If your answer is negative use “minus sign”. (a) Use the empirical rule to calculate the percentage of individuals who sleep between 4.4 and 10 hours per day. Enter your answer as a percentage. %...
The results of a national survey showed that on average, adults sleep 7.1 hours per night....
The results of a national survey showed that on average, adults sleep 7.1 hours per night. Suppose that the standard deviation is 1.5 hours and that the number of hours of sleep follows a bell-shaped distribution. If needed, round your answers to two decimal digits. If your answer is negative use “minus sign”. (a) Use the empirical rule to calculate the percentage of individuals who sleep between 4.1 and 10.1 hours per day. Enter your answer as a percentage. %...
The results of a national survey showed that on average, adults sleep 6.9 hours per night....
The results of a national survey showed that on average, adults sleep 6.9 hours per night. Suppose that the standard deviation is 1.1 hours and that the number of hours of sleep follows a bell-shaped distribution. If needed, round your answers to two decimal digits. If your answer is negative use “minus sign”. (a) Use the empirical rule to calculate the percentage of individuals who sleep between 4.7 and 9.1 hours per day. Enter your answer as a percentage. %...
The results of a national survey showed that on average, adults sleep 7.4 hours per night....
The results of a national survey showed that on average, adults sleep 7.4 hours per night. Suppose that the standard deviation is 1.1 hours and that the number of hours of sleep follows a bell-shaped distribution. If needed, round your answers to two decimal digits. If your answer is negative use “minus sign”. (a) Use the empirical rule to calculate the percentage of individuals who sleep between 5.2 and 9.6 hours per day. Enter your answer as a percentage. %...
The results of a national survey showed that on average, adults sleep 7 hours per night....
The results of a national survey showed that on average, adults sleep 7 hours per night. Suppose that the standard deviation is 1.5 hours and that the number of hours of sleep follows a bell-shaped distribution. If needed, round your answers to two decimal digits. If your answer is negative use “minus sign”. (a) Use the empirical rule to calculate the percentage of individuals who sleep between 4 and 10 hours per day. Enter your answer as a percentage. %...
A class survey in a large class for first-year college students asked, "About how many minutes...
A class survey in a large class for first-year college students asked, "About how many minutes do you study on a typical weeknight?" The mean response of the 272 students was x¯¯¯x¯ = 148 minutes. Suppose that we know that the studey time follows a Normal distribution with standard deviation σσ = 65 minutes in the population of all first-year students at this university. Regard these students as an SRS from the population of all first-year students at this university....
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT