Answer:
Step-by-step explanation:
1) Data given
represent the population proportion of complaints settled for new car dealers
represent the sample of complaints involving new car dealers.
2) Find the distribution of
First we can begin with the expected value
and that represent the mean
Now we can find the variance for
When we use a proportion p, when we draw n items each from a Bernoulli distribution. The variance of each Xi distribution is p(1−p) and hence the standard error is p(1−p)/n. for this reason the variance for is given by:
So then the deviation would be given by:
The sample distribution of the sample proportion is normal, so then we have this:
3) Calculating the mean and standard deviation
We can replace the values given in order to find the mean and deviation:
Step-by-step explanation:
Find how many data are there that in between 60-64.99
Answer:
there is no graph. can you edit the question?
Answer:
Step-by-step explanation:
50x75= 3750 square feet
Hope this helps! :)