Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (b) below.
Click the icon to view at distribution table.
a. What is the number of degrees of freedom that should be used for finding the critical value 1/2?
df=
(Type a whole number.)
b. Find the critical value a/2 corresponding to a 95% confidence level.
*/2=17
(Round to two decimal places as needed.)

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step-by-step explanation:

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.  

this answer is !