Red snapper is a rare and expensive reef fish served at upscale restaurants. A certain law prohibits restaurants from se

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Red snapper is a rare and expensive reef fish served at upscale
restaurants. A certain law prohibits restaurants from serving a​
cheaper, look-alike variety of fish​ (vermilion snapper or lane​
snapper) to customers who order red snapper. Researchers at a
university used DNA analysis to examine fish specimens labeled​
"red snapper" that were purchased form vendors across the country.
The DNA tests revealed that 70​% of the specimens were not red​
snapper, but the​ cheaper, look-alike variety of fish.
a. Assuming that the results of the DNA analysis are​ valid, what
is the probability that you are actually served red snapper the
next time you order it at a​ restaurant?
The probability is ? ​(Round to the nearest
hundredth as​ needed.)
If there are 6 customers at a​ restaurant, all who
have ordered red​ snapper, what is the probability that at least
one customer is actually served red​ snapper?
The probability is ?