Question: 3) A lightbulb has a normally distributed light output with mean 5000 end foot-candles and standard deviation of 50 end foot-candles. a. Find a lower

3) A lightbulb has a normally distributed light

3) A lightbulb has a normally distributed light output with mean 5000 end foot-candles and standard deviation of 50 end foot-candles. a. Find a lower tolerance limit such that only 0.2% of the bulbs will not exceed this limit. b. What fraction of these lightbulbs will have a lower than an output of 5080 end foot-candles? c. If 50000 lightbulbs are made, how many of them will have an output stronger than5080 end foot-candles? How many of them will have an output weaker than 4890 end foot-candles

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