A coffee shop relocates to Italy and wants to make sure that all lattes are consistent. They believe that each latte has an average of 4 oz of espresso. If this is not the case, they must increase or decrease the amount. A random sample of 25 lattes shows a mean of 4.6 oz of espresso and a standard deviation of .22 oz. Use alpha = .05. Show and label all steps of your hypothesis test. %3D

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4. A coffee shop relocates to Italy and wants to make sure that all lattes are consistent.
They believe that each latte has an average of 4 oz of espresso. If this is not the case,
they must increase or decrease the amount. A random sample of 25 lattes shows a mean
of 4.6 oz of espresso and a standard deviation of .22 oz. Use alpha = .05. Show and label
all steps of your hypothesis test.
5. A car company claims that their Super Spiffy Seda averages 31mpg. You randomly select 9
Super Spiffies from your local dealerships and test their gas mileage under similar
conditions. You find that the average number of miles per gallon for your sample is 29 with
v a standard deviation of 2.78. Does the actual gas mileage for these cars deviate significantly
from 317 (Use alpha of .05)
Transcribed Image Text:4. A coffee shop relocates to Italy and wants to make sure that all lattes are consistent. They believe that each latte has an average of 4 oz of espresso. If this is not the case, they must increase or decrease the amount. A random sample of 25 lattes shows a mean of 4.6 oz of espresso and a standard deviation of .22 oz. Use alpha = .05. Show and label all steps of your hypothesis test. 5. A car company claims that their Super Spiffy Seda averages 31mpg. You randomly select 9 Super Spiffies from your local dealerships and test their gas mileage under similar conditions. You find that the average number of miles per gallon for your sample is 29 with v a standard deviation of 2.78. Does the actual gas mileage for these cars deviate significantly from 317 (Use alpha of .05)
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