00:01
So our question says that the average age of licensed driver in the county is 42 .6 with a standard division of 12 and the distribution is approximately normal.
00:10
A county police officer was interested in whether the average age of the drivers receiving parking tickets differed from the average wage of the driving population.
00:20
So she obtained a sample of n is equal to 25 drivers receiving their parking tickets.
00:27
The average age of these drivers was 40 .5.
00:31
So we were supposed to perform the six steps of hypothesis testing necessary to determine whether this group differs from the population of drivers in the county.
00:40
So the first step is to like step one is to extract all of the necessary details.
00:45
Population with mew is actually equals to 42 .6.
00:49
Population standard divisions actually equals to 12.
00:52
The sample size n, we have that to be equals to 25.
01:00
The sample mean x bar we have that to be equals to 40 .5 that being said the next step is for us to state the null and alternative hypothesis so our null hypothesis h -not is based on the fact that mu is equal to 42 .6 and the alternative hypothesis is that mu is not equals to 42 .6 that is the mean age of the average age of license drivers is actually equals to 42 .6 and the alternative is at the average age of license drivers differs differs from 42 .6 rather...