Cuales son las 2 variables necesarias para calcular una demanda

Sales at a fast-food restaurant average $6,000 per day. the restaurant decided to introduce an advertising campaign to increase daily sales. to determine the effectiveness of the advertising campaign, a sample of 49 days of sales were taken. they found that the average daily sales were $6,300 per day. from past history, the restaurant knew that its population standard deviation is about $1,000. if the level of significance is 0.01, have sales increased as a result of the advertising campaign? multiple choicea)fail to reject the null hypothesis. b)reject the null hypothesis and conclude the mean is higher than $6,000 per day. c)reject the null hypothesis and conclude the mean is lower than $6,000 per day. d)reject the null hypothesis and conclude that the mean is equal to $6,000 per day. expert answer

Kendrick is leaving his current position at a company, and charlize is taking over. kendrick set up his powerpoint for easy access for himself. charlize needs to work in the program that is easy for her to use. charlize should reset advanced options

Brenda wants a new car that will be dependable transportation and look good. she wants to satisfy both functional and psychological needs. true or false