How many bulbs will have lifespan between 970 and 950 hours
An Electrical firm manufactures light bulbs that have a lifespan that is normally distributed with a mean 900 hours and standard deviation of 50 hours. out of 250 bulbs, about how many bulbs will have lifespan between 970 and 950 hours.
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What conditions cause Physarum to form spores?
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Based on this information can we determine the proportion of weeks the family spends less than $200. If so, find this proportion. If not, explain why.
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