Mathematics, 02.07.2020 17:01 hebiancao
The sales of a grocery store had an average of $7,000 per day. The store introduced several advertising campaigns in order to increase sales. To determine whether or not the advertising campaigns have been effective in increasing sales, a sample of 100 days of sales was selected. It was found that the average was $7,280 per day. From past information, it is known that the standard deviation of the population is $1,000.At a 5% significance level one can conclude that a. The advertising campaigns increased the average daily sales. b. The advertising campaigns decreased the average daily sales. c. The average daily sales remained unchanged d. Cannot tell from the information provided
Answers: 1
Mathematics, 21.06.2019 13:30
At dinner, 2/5 of the people had fish and 1/3 had chicken. if everyone else had lamb, what fraction of the people had lamb? and if 40 people had lamb , calculate the total number of people at the dinner.
Answers: 1
Mathematics, 21.06.2019 14:30
If given an equation of a line such as -1/2x+6 how would you create an equation of a line parallel and perpendicula to this line that goes through another point such as (4,10)
Answers: 1
Mathematics, 21.06.2019 16:50
For the equations below which statement is true ? -2x=14 6x=-42
Answers: 1
Mathematics, 21.06.2019 19:00
Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18
Answers: 1
The sales of a grocery store had an average of $7,000 per day. The store introduced several advertis...
English, 29.10.2019 18:31
Health, 29.10.2019 18:31
Arts, 29.10.2019 18:31
Social Studies, 29.10.2019 18:31
Physics, 29.10.2019 18:31
Mathematics, 29.10.2019 18:31
History, 29.10.2019 18:31