Mathematics, 09.12.2021 14:50 starwarsfan1975
A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1026 h with a standard deviation of 85 h. Find the z-scores for lightbulbs which last 800 and 890 h. (Round your answers to two decimal places.)
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Arace is 10 kilometers long.markers will be placed at the beginning and end of the race course and at each 500 meter mark.how many markers are needed to mark the course for the race?
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If the class creates a histogram of the data in table, how many students are in the range 12cm to 13.9 cm
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