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.
Step-by-step explanation:
6-6x=108
-6 from both sides
-6x=102
divide by -6 on both sides
x= -17
Answer:
16%
Step-by-step explanation:
800 is 16% of 5000 so and it decreased by 800, so it decreased by 16%
Answer:
52
Step-by-step explanation:
You have 8 eight hours and 416miles, and you need to distribute those 416 miles to eight hours. so 416/8=52
Answer:
0.8
hope this is correct!! c: