[填空题]
The table below shows the distribution of the number of fish caught durg65a( cs- nv(wej+ o05-kxa dis(qxh l0r8p ioing a fi :xytc;qwd zo wfgl+7f mhi1dla6 -wv3 s9-z-9shing contest by 100 contestants.
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1. Calculate
1. the mean number of fish caught by a contestant; ≈
2. the standard deviation. ≈
2. Find the median number of fish caught in the contest.
3. Find the interquartile range.
4. Determine if a contestant who caught 10 fish would be considered an outlier.
One of the contestants is chosen at random.(a,b) a= b=
5. Find the probability that this chosen contestant caught 6 fish or more.
A second contestant is randomly chosen.
6. Given that the first contestant caught 6 fish or more, find the probability that each of these two contestants caught exactly 7 fish.
The cost of the fishing equipment used by the 100 contestants is normally distributed with a mean of 1200 US Dollars (USD) and a standard deviation of 300 USD. ≈
7. 1. Calculate the probability that a contestant chosen at random spent at least 1000 USD for fishing equipment. ≈
2. Calculate the expected number of contestants that spent at least 1000 USD on fishing equipment.
