b) A bank randomly selects a sample of 15 of its commercial loan accounts, with mean 1.3433, and standard deviation equal 0.1921, calculate a 95 percent confidence interval for commercial loan accounts.

3. what is the output of the following statements? temporary object1; temporary object2("rectangle", 8.5, 5); temporary object3("circle", 6, 0); temporary object4("cylinder", 6, 3.5); cout < < fixed < < showpoint < < setprecision(2); object1.print(); object2.print(); object3.print(); object4.print(); object1.set("sphere", 4.5, 0); object1.print();