The mean speed of a sample of vehicles along a stretch of highway is 69
miles per hour, with a standard deviation of 4
miles per hour. estimate the percent of vehicles whose speeds are between 65
miles per hour and 73
miles per hour. (assume the data set has a bell-shaped distribution.)
approximately nothing
%
of vehicles travel between 65
miles per hour and 73
miles per hour.

7

step-by-step explanation:

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

if x = 1, then the answer is 3.5

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.