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April 3rd, 2012, 04:54 PM   #1
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Truck Drivers and Statistic Question?

How do I solve this problem?

And this one, a statement has to be written along with it as well.

According to a study of 90 truckers, a trucker drives, on average, 540 miles per day. If the standard deviation of the miles driven per day for the population of truckers is 40, find the 99% confidence interval of the mean number of miles driven per day by all truckers?
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May 4th, 2012, 03:45 AM   #2
fam
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Re: Truck Drivers and Statistic Question?

Quote:
Originally Posted by gigsaw
According to a study of 90 truckers, a trucker drives, on average, 540 miles per day. If the standard deviation of the miles driven per day for the population of truckers is 40, find the 99% confidence interval of the mean number of miles driven per day by all truckers?
From the problem we have:



and we need to calculate 99 % CI of the

we also know that:

and then:

99 % CI of miles/day
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January 7th, 2014, 11:48 PM   #3
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Re: Truck Drivers and Statistic Question?

Some questions strikes my mind too. Is it important to get 4x4 education from any driving school? What is its benefit? Anyone can help?
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April 10th, 2014, 01:57 AM   #4
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Can you please tell me which is best Light Vehicle Driver Training school available in US. If anyone have idea? I need to take the classes so that i can start my own business soon.
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April 10th, 2014, 04:09 PM   #5
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Quote:
and then:

99 % CI of miles/day
It requires the assumption that $\displaystyle X$ is normally distributed doesn't it? (just curious )
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according to a study of 90 truckers
,

according to a study of 90 truckers, a trucker drives, on average, 540 miles per day. if the standard deviation of the miles driven per day for the population of truckers is 40, find the 99% confidence interval of the mean number of miles driven per

,

the average number of miles that 90 truckers

,

according to a study of 90 truckers a trucker drives

,

according to a study of 90 truckers a trucker drives on average 540 miles per day if the standard deviation of the miles driven per day for the population of truckers is 40 find the 99% confidence interval of the mean

,

The average number of miles that 90 truckers drove in a day was 540 with a standard deviation of 40 miles. What is the 99% confidence interval of the true mean number of miles driven by all truckers?

,

truck driver deviation means

,

according to a study of 90 truckers, a trucker drives, on average, 540 miles per day. if the standard deviation of the miles driven per day for the population of truckers is 40, find the 99% confidence interval of the mean number of miles driven per day b

,

average miles driven per day trucker

,

according to a study of 90 truckers, a trucker drives on average 540 miles per day. If the standard deviation of the miles driven per day for the population of truckers is 40, find the 99%confidence interval of the mean number of miles driven per day by a

,

according to a study of 90 truckers, a trucker drives, on average, 540 miles per day. if the standard deviation of the miles driven per day for the population of truckers is 40, find the 99% confidence interval of the mean number of miles driven per day b

,

according to a study of 90 truckers, a trucker drives, on average, 540 miles per day

,

accordibg to a study of 90 truckers , a truck driver

,

according to a study of 90 truckers, a trucker drives, on average, 540 miles per day. if the standard deviation of the miles driven per day for the population of truckers is 40, find the 99% confidence interval of the mean number of miles driven per day

,

according to a study of 90 truckers, a trucker drives, on average, 540 miles per day. if the standard deviation of the miles driven per day for the population of truckers is 40, find the 99% confidence interval of the mean number of miles driven per day

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