Name 2 decimals that round to 8.64.
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What is best way to getting answer for my exam is

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if