Suppose that, based on a sample, the 95% confidence interval for the mean of a population is (61,85). What was the mean of the sample?

A. 73

B. 81

C. 69

D. 77

The daily number of patients visiting a dentists office during one week are 8,41,35,39,36, and 42. Which statement is true? A. The mean, median, and mode are all appropriate measures of center. B. The median is the only appropriate measure of center.

Solve the problem using the formula below: Interest = 2yc / m (n+1) Given a note for $1,000, with 24 equal monthly payments, and a 7.5% true annual interest rate is charged. What is the principal plus interest payment?

6. Hank can type 24 words per minute. Hank starts typing at 9:00 am. Assuming that he does not take breaks, at what time will Hank finish typing 3,240 words? F. 11:00 am G. 11:15 am H. 11:25 am J. 12:15 pm K. 2:25 pm

Nadal invests $5,678 at an annual interest rate of 4.5 percent for 6 years. For which variable can Nadal substitute the value 5,678 in the simple interest formula? I = p r t I p r t

How do you solve 54x2 + 87x + 28

What is the main reason the US civil war was started

How do you show 2+3i is a root of x^2-4x+13

Consider the equation ax^2 bx 5=0 where a, b, c are rational numbers and the quadratic has 2 distinct zeros. if one zero is irrational, the other 0 is

9. Which relation represents a function? A. { (-1, 3), (0, - 1), (1, 3), (2, 5) } B. { (1, - 1), (-1, 0), (1, 1), (3, 2) } C. { (5, - 1), (3, - 1), (4, 1), (5, 2) } D. { (-4, 2), (1, - 2), (0, 0), (1, 1) }

Elisa withdrew $20 at a time from her bank account and withdrew a total of $140. Francis withdrew $45 at a time from his bank account and withdrew a total of $270. Who made the greater number of withdrawals? Justify you answer