An ethologist is interested in how long it takes a certain species of water shrew to catch its prey. He only has access to a sample of 100 shrews. On multiple occasions each day he lets a dragonfly loose inside the cage of the shrews and times how long it takes until the shrews catch the dragonfly. After months of research the ethologist concludes 1) that the mean prey catching time was 30 seconds, 2) the standard deviation was 5.5 seconds and 3) that the scores he has collected are normally distributed.
What is the percentage of shrews that catch a dragonfly in less than 21 seconds
sectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentes
sectetur adipiscing elit. Nam lacinia p
sectetur adipiscing elit. N
Unlock access to this and over
10,000 step-by-step explanations
Have an account? Log In