Below is a frequency table for the number of heads when four coins are tossed 64 times.
xi | 0 | 1 | 2 | 3 | 4 | fi | 5 | 15 | 25 | 16 | 3 |
(a) Calculate the sample mean.
(b) Find the sample variance.
(c) Find the estimated probability there will be less than three heads on a toss.
Solve
Below is a frequency table for lengths in cm of a species of tropical fish
xi | 10 | 11 | 12 | 13 | 14 | fi | 4 | 10 | 14 | 9 | 6 |
(a) Calculate the sample mean.
(b) Find the sample variance.
Solve
Simulate a random variable that counts the number of heads when four coins are tossed 64 times.
(a) Construct a frequency table
(b) Find the sample mean.
(c) Find the sample variance.
Solve