Question

If a bacteria population starts with 125 bacteria and doubles in
size every half hour, then the number of bacteria after *t*
hours is

*n* = *f*(*t*) = 125 ·
4^{t}.

(a) Find the inverse of this function.

*t* = log4(t125)

Explain its meaning.

a The inverse function gives the population after half an hour has passed.

b The inverse function gives the population after 4 hours have passed.

c The inverse function gives the number of hours that have passed when the population size is halved.

d The inverse function gives the number of hours that have
passed when the population size reaches *n*.

e The inverse function gives the number of hours that have passed when the population size doubles.

(b) When will the population reach 110,000? (Round your answer to
two decimal places.)

*t* = hr

Answer #1

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The confidence intervals for the population proportion are
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the t distribution when the population standard deviation is not
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the z distribution
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The difference between the two sample means 1
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True
False
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