Which of the following statement is true ?
a) alain saves at a greater rate than both david and jim
b) david saves at a greater rate than both alain and jim
c) jim saves at a greater rate than both david and alain
d)alain and jim save at the same rate

The sum of the product of 4 and x and the product of 7 and y is 61. the sum of the product of 12 and x and the product of 21 and y is 61. what are the values of x and y?

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

The fraction of defective integrated circuits produced in a photolithography process is being studied. a random sample of 300 circuits is tested, revealing 17 defectives. (a) calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool. round the answers to 4 decimal places. less-than-or-equal-to p less-than-or-equal-to (b) calculate a 95% upper confidence bound on the fraction of defective circuits. round the answer to 4 decimal places. p less-than-or-equal-to