Solution: (a) It is estimated that the servers of 24hournews.ie suffer a crash rate of 8 crashes per decade. Using a normal approximation, find the probability
Question: (a) It is estimated that the servers of 24hournews.ie suffer a crash rate of 8 crashes per decade. Using a normal approximation, find the probability that the website suffers crashes 13 times or more in the next 15 years?
(b) Malex. Ltd manufactures a pharmaceutical product GC-161. The process by which they produce GC-161 is known to give purity concentrations that are normally distributed with a mean 99.1% and a standard deviation 1.52%. A laboratory wishes to purchase batches of GC-161 from Malex, however they need at least 95% of their supply to be at least 97% pure. Can the Labs requirements be met?
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