Mathematics, 17.05.2021 23:30 jby
The lifespan of brand A batteries is Normally distributed with a mean of 108 hours and a standard deviation of 12.5
hours. The lifespan of brand B batteries is Normally distributed with a mean of 92 hours and a standard deviation of
15.1 hours. A quality-control specialist selects a random sample of 25 of each type of battery and calculates the
sample mean lifespan for each brand. Let - be the difference in the sample mean lifespan for each brand of
battery. What is the mean of the sampling distribution of the difference in sample means?
Do not round your answer
Answers: 3
Mathematics, 21.06.2019 18:00
Solve this system of equations. 12x − 18y = 27 4x − 6y = 10
Answers: 1
Mathematics, 21.06.2019 23:30
Find each value of the five-number summary for this set of data. [note: type your answers as numbers. do not round.] 150, 120, 136, 180, 158, 175, 124, 162 minimum maximum median upper quartile lower quartile
Answers: 1
Mathematics, 22.06.2019 00:10
Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?
Answers: 1
The lifespan of brand A batteries is Normally distributed with a mean of 108 hours and a standard de...
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