The average life of an automobile tire of a certain manufacturer follows a Normal distribution, with a mean of 32,000 miles and a standard deviation of 1,250. Use the z-table to answer the question.

31,344 miles
32,650 miles
32,875 miles
33,250 miles

What tire life span separates the upper 30% of the life spans from the lower 70% of the life spans?

there are no figures how am i supposed to answer this question

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.  

yes

step-by-step explanation:

yes

3

step-by-step explanation: