Question

The actual time it takes to cook a two-pound chicken is normally distributed. A random sample of 20 two-pound Mcdonald's chickens is taken and the time (in minutes) it took for these chickens to cook are shown below:

35    42    46    38    35.5    39.2    45    40    51    42.6
45    40    33    37    42.5    35.8    42    41    50    39.1

Find an estimate of the true mean time it takes to cook a two-pound Mcdonald's chicken. Round off the answer to two decimal places and show complete solutions.