Answer:
Yes, the manufacturer can estimate the proportion of all customers at this dealership who feel that its service is exceptionally good.
No, the manufacturer cannot estimate, the proportion of customers who rated the service as exceptionally good, about the other dealerships.
Step-by-step explanation:
A sample of 65 customers from a dealership is selected and it is determined that 55% of the customers rated the service as exceptionally good.
According to the central limit theorem if a large random sample selected from an unknown population then the sampling distribution of sample proportion (
) follows a normal distribution.
Then the population proportion can be estimated by the sample proportion value.
That is,
.
Thus, the manufacturer can estimate the proportion of all customers at this dealership who feel that its service is exceptionally good using the sample proportion value of
.
Since the sample is selected from a specific dealership, he cannot estimate, the proportion of customers who rated the service as exceptionally good, about the other dealerships.
Answer:
Look below
Step-by-step explanation:
Average means the middle of two numbers.
If the larger number is exactly one more or an odd number more than the smaller, it is possible for a half point to occur.
Answer:
yes
Step-by-step explanation:
Vertical angles are always equal. The vertical angles are the ones opposite each other. Therefore x would equal 40.