Which of the following statements contain a variable? check all that apply. a. the number of different colors on the page. b. they scored 27 points. c. eighty miles per hour. d. half the speed of the car.

Find the maximum value of p= 4x + 5y subject to the following constraints :

There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?

Use the given degree of confidence and sample data to construct a confidence interval for the population mean mu . assume that the population has a normal distribution. a laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with sequals 17.6 milligrams. a confidence interval of 173.8 mgless than muless than 196.2 mg is constructed for the true mean cholesterol content of all such eggs. it was assumed that the population has a normal distribution. what confidence level does this interval represent?