Mathematics, 22.11.2019 22:31 itzia00
The life in hours of a 75-watt light bulb is known to be normally distributed with σ = 25 hours. suppose that you wanted the total width of the two-sided confidence interval on the mean life to be six hours at 95% confidence. what sample size should be used?
Answers: 1
Mathematics, 21.06.2019 16:50
Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.
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Mathematics, 21.06.2019 20:30
Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?
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Mathematics, 21.06.2019 20:30
What is always true about a positive integer raised to a negative odd power?
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The life in hours of a 75-watt light bulb is known to be normally distributed with σ = 25 hours. sup...
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