Bob is hiking across Death Valley. He travels South for 4 miles, then East for 8 miles, then South for 2 miles, then West 2 miles. How far is his starting point from his ending point? (Round to the
nearest tenth of a mile).

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Who long does it take to drive 150 miles at 45 miles per hour

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.