TrueMonster8803 TrueMonster8803

21-12-2022
Mathematics

Answered

the owner of a large car dealership believes that the financial crisis decreased the number of customers visiting her dealership. the dealership has historically had 800 customers per day. the owner takes a sample of 100 days and finds the average number of customers visiting the dealership per day was 750. assume that the population standard deviation is 350. to determine whether there has been a decrease in the average number of customers visiting the dealership daily, the appropriate hypotheses are .

Answer :

Other Questions

what is the standard deviation of the followng sample: average of 100 independent normal random variables each with a population standard deviation of 3?

a national manufacturer of ball bearings is experimenting with two different processes for producing precision ball bearings. it is important that the diameters

as a business goal, a small electronic store looks to sell at least $7600 worth of televisions and projection systems per day. the price per television is $475

in the normal distribution with any given mean and standard deviation, we know that approximately 68% of the observations fall within one standard deviation of

the results of a mathematics placement exam at two different campuses of mercy college follow: campus sample size sample mean population standard deviation 1 33

two sets of 60 high school students each were taught algebra by two methods, respectively. the experimental group used programmed learning and no formal lecture

develop the estimated regression equation to predict the repair time given the number of months since the last maintenance service, the type of repair, and the

3. A school had 1,200 students last year and only 1,080 students this year. What was the percentage decrease in the number of students? 0 120 240 360 480 600 72

The sum of a number times 8 and 25 is at most 20

a student is taking a multiple-choice exam in which each question has four choices. assume that the student has no knowledge of the correct answers to any of th