Answer:
he would have to pick 1,2,3 or 5...so that is 4/6 chance
if you need the percentage (im not sure if its right) it would be 76%
The answer is (inches/min)* (1ft/12in)
Answer: 
Step-by-step explanation:
Given : Sample size : 
Sample mean : 
Standard deviation : 
Significance level : 
Critical value : 
Formula to find the confidence interval for population mean :-
Hence, a 95% confidence interval for the population mean =
Let the speed of the water current be v.
total travel time = time to go upstream + time to return downstream to the starting point
Hence, 8 = time in hours = 6 / (4-v) + 6 / (4 +v) = 6*8/(16-v^2)
Hence, 16 - v^2 = 6, or v^2 = 10 or v = √10 miles / hour
Easy, since you have the diameter, which is very needed in order to find the circumference, you can use the equation d x 3.14 = c. d is the diameter and c is the circumference to 300 x 3.14 = 942 ft
