Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. much of this money is put into a fund called an endowment, and the college spends only the interest earned by the fund. a recent survey of 8 private colleges in the united states revealed the following endowments (in millions of dollars): 60.2, 47.0, 235.1, 490.0, 122.6, 177.5, 95.4, and 220.0. summary statistics yield x = 180.975 and s = 143.042. a 95% confidence interval for the mean endowment of all the private colleges in the united states is:

answer: 32.68

step-by-step explanation:

x=2

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.  

20%

step-by-step explanation: