The amount of time Americans commute to work is normally distributed with mean of 45 minutes and a standard deviation of 15 minutes.
The 25% of Americans with the LONGEST commuting times all get to work in more than how many minutes? You can use two decimal places of accuracy.
The amount of time Americans commute to work is normally distributed with mean of 45 minutes...
The amount of time Americans commute to work is normally distributed with mean of 45 minutes and a standard deviation of 15 minutes. According to the Empirical Rule, approximately 95% of Americans commute between ["20.33", "30", "0", "15"] and ["60", "90", "75", "69.67"] minutes
The minutes to commute to Atlanta college is exponentially distributed with a mean of 20 minutes. (12 points) a. Find the m value b. Find the standard deviation. c. Find the probability of commuting less than 10 minutes. ?(? <10) d. Find the probability of commuting greater than 25 minutes? ?(? >25) e. Find the probability of commuting between 15 and 22 minutes? ?(15? <22) Find the probability of commuting 5 minutes? ?(? =5) NEED HELP THANKS
In a random sample of 25 people, the mean commute time to work was 30.2 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean mu. What is the margin of error of mu? Interpret the results. The confidence interval for the population mean mu is left parenthesis nothing comma nothing right parenthesis . (Round to one decimal place as needed.) The...
In a random sample of 25 people, the mean commute time to work was 32.9 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 98% confidence interval for the population mean μ: What is the margin of error of μ? Interpret the results. The confidence interval for the population mean μ is _______ The margin of error of μ is _______ Interpret the results A. If a large sample of people are...
Suppose commute times in a large city are normally distributed and that 66.60% of commuters in this city take more than 21 minutes to commute one-way. If the standard deviation of such commutes is 6.0 minutes, what is the mean commute? (Round your answer to 3 decimal places.)
In a random sample of 29 people, the mean commute time to work was 323 minutes and the standard deviation was 72 minutes. Assume the population is normally distributed and use at distribution to construct a 99% confidence interval for the population mean . What is the margin of error of u? Interpret the results The confidence interval for the population MAAN (Round to ona decimal ACA 2 neded) D The margin of error of his (Round to ona decimal...
In a random sample of 21 people, the mean commute time to work was33.9 minutes and the standard deviation was7.3minutes. Assume the population is normally distributed and use a t-distribution to construct a 98%confidence interval for the population mean mμ. What is the margin of error of mμ? The confidence interval for the population mean mμ is -------------- The margin of error of mμ is ----------------- Interpret the results. A. With 98% confidence, it can be said that the commute...
In a random sample of 18 people, the mean commute time to work
was 30.7 minutes and the standard deviation was 7.3 minutes. Assume
the population is normally distributed and use a t distribution to
construct a 80% confidence interval for the population mean. What
is the margin of error?
In a random sample of 18 people, the mean commuite time to work to one decimal place as needed ) The margn of ee of D. It can be said...
The commute times for workers in a city are normally distributed with an unknown population mean and standard deviation. If a random sample of 37 workers is taken and results in a sample mean of 31 minutes and sample standard deviation of 5 minutes. Use Excel to find a 95% confidence interval estimate for the population mean using the Student's t-distribution. Round the final answers to two decimal places.
In a random sample of 8 people, the mean commute time to work was 34.5 minutes and the standard deviation was 7.3 minutes. A 95% confidence interval using the t-distribution was calculated to be (28.4.40.6). After researching commute times to work, it was found that the population standard deviation is 9.4 minutes. Find the margin of error and construct a 95% confidence interval using the standard normal distribution with the appropriate calculations for a standard deviation that is known. Compare...