Question

A study of commuting times reports the travel times to work of a random sample of...

A study of commuting times reports the travel times to work of a random sample of 988 employed adults in Chicago. The mean is x = 57.0 minutes and the standard deviation is s = 58.9 minutes. What is the standard error of the mean? (Round your answer to four decimal places.)
minutes

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Standard error

                                                                                                                                   

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
a.) A study of class attendance and grades among first-year students at a state university showed...
a.) A study of class attendance and grades among first-year students at a state university showed that in general students who attended a higher percent of their classes earned higher grades. Class attendance explained r2 = 64% of the variation in grade index among the students. What is the numerical value of the correlation between percent of classes attended and grade index? (Use 2 decimal places.) b.) An opinion pollster asks 100 college seniors how they view their job prospects....
Assume the commuting times of American workers follow a normal distribution with mean mu=23 minutes and...
Assume the commuting times of American workers follow a normal distribution with mean mu=23 minutes and standard deviation sigma=5 minutes. A random sample of 16 American workers is taken. What is the probability that the sample mean commuting time is greater than 25 minutes?
In a random sample of 8 ​people, the mean commute time to work was 33.5 minutes...
In a random sample of 8 ​people, the mean commute time to work was 33.5 minutes and the standard deviation was 7.2 minutes. A 90​% confidence interval using the​ t-distribution was calculated to be left parenthesis 28.7 comma 38.3 right parenthesis. After researching commute times to​ work, it was found that the population standard deviation is 9.3 minutes. Find the margin of error and construct a 90​% confidence interval using the standard normal distribution with the appropriate calculations for a...
Assume the student commuting time to the IUPUI campus is normally distributed. To build a 95%...
Assume the student commuting time to the IUPUI campus is normally distributed. To build a 95% confidence interval for the mean commuting time for all IUPUI students, a random sample of n = 5 students provided the following times (shown in minutes). x 10 20 25 30 15 The variance of the mean x̅ ? The margin or error for a 95% interval estimate is? In the previous question to obtain a 95% margin of error of ±2 minutes, what...
The one-way commuting times from home to work for all employees working at a large company...
The one-way commuting times from home to work for all employees working at a large company have a mean of 39 minutes and a standard deviation of 8 minutes. a. Using Chebyshev's theorem, find the minimum percentage of employees at this company who have one-way commuting times in the interval 19 to 59 minutes. = _______________ % b. Using Chebyshev's theorem, find the interval that contains one-way commuting times of at least 89% of the employees at this company. =____________to__________minites...
4. A random sample of 36 commuters in Chicago was taken. The sample mean of the...
4. A random sample of 36 commuters in Chicago was taken. The sample mean of the commuting times was 33.2 minutes and the sample standard deviation was 8.3 minutes. a. Can the distribution of x ̅ be considered Nearly Normal? Why? (3) b. Check for Independence. Explain your answer. (4) c. Construct a 95% confidence interval. Show the formula and fill in all of the values. Calculations can be done using a calculator test. Give the answer to the nearest...
In a random sample of 88 ​people, the mean commute time to work was 36.536.5 minutes...
In a random sample of 88 ​people, the mean commute time to work was 36.536.5 minutes and the standard deviation was 7.27.2 minutes. A 9898​% confidence interval using the​ t-distribution was calculated to be left parenthesis 28.9 comma 44.1 right parenthesis(28.9,44.1). After researching commute times to​ work, it was found that the population standard deviation is 8.78.7 minutes. Find the margin of error and construct a 9898​% confidence interval using the standard normal distribution with the appropriate calculations for a...
A company in California is concerned about the time that its employees spend commuting to work....
A company in California is concerned about the time that its employees spend commuting to work. The one-way commute times for its employees are normally distributed with a mean of 35.5 minutes and a standard deviation of 5.0 minutes. What is the commute time that separates the longest 20.9% of commutes from the rest? [ENTER ANSWER AS A NUMBER OF MINUTES TO 2 DECIMAL PLACES]
A person is trying to establish their average commuting time and records the times everyday. They...
A person is trying to establish their average commuting time and records the times everyday. They found the average commuting time to be 24 minutes with a standard deviation of 3.5 minutes. Approximately, how many commutes do they need to record to be 95% sure that their sample mean is within 1 minute of the true mean.
Commuting ~ According to 2016 U.S. Census, the average commuting time of Michiganders is 24.4 minutes....
Commuting ~ According to 2016 U.S. Census, the average commuting time of Michiganders is 24.4 minutes. A random sample of 120 Michigan workers has a mean commuting time of 23.08 minutes and a standard deviation of 8.3 minutes. Note: Numbers are randomized in each instance of this question. Pay attention to the numbers in this question. A researcher wonders if the actual mean commuting time of Michiganders is less than the value reported in the 2016 Census. What is the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT