You want to know how the commuting time of your employees
compare to Departments competing for...
You want to know how the commuting time of your employees
compare to Departments competing for the same staff, so you get
some survey data on average commuting times for 25 randomly
selected people in your line of business.
Data: 59, 74, 73, 66, 80, 84, 90, 110, 37.2, 50, 101.8, 39, 80, 35,
88, 34, 82, 65, 61, 63, 66, 88, 70, 79, 75
You find that the mean commuting time is 70 minutes, with a
standard deviation of...
In a random sample of 8 people, the mean commute time to work
was 35.5 minutes...
In a random sample of 8 people, the mean commute time to work
was 35.5 minutes and the standard deviation was 7.2 minutes. A 95%
confidence interval using the t-distribution was calculated to be
left parenthesis 29.5 comma 41.5 right parenthesis. After
researching commute times to work, it was found that the
population standard deviation is 9.2 minutes. Find the margin of
error and construct a 95% confidence interval using the standard
normal distribution with the appropriate calculations for a...
In a random sample of 25 people, the mean commute time to work
was 30.6 minutes...
In a random sample of 25 people, the mean commute time to work
was 30.6 minutes and the standard deviation was 7.2 minutes.
Assume the population is normally distributed and use a
t-distribution to construct a 95% confidence interval for the
population mean μ.
What is the margin of error of μ? Interpret the results.
1. The confidence interval for the population mean μ is
(_,_)
2. The margin of error of μ is __
3. Interpret the results.
A.It...
Recently, commuters in Minneapolis have protested on social
media, saying commuting time has increased due to...
Recently, commuters in Minneapolis have protested on social
media, saying commuting time has increased due to a number of
badly-designed construction projects on main roads into and out of
the city. A random sample of 72 commuters revealed an average
commuting time of 46.8 minutes with a standard deviation of 6.90
minutes.
If you were to calculate a 95% confidence interval, what value
would you use for the critical value t*?
Question 12 options:
1.645
1.993
1.994
1.96
Question 13...