Null hypothesis and the alternative hypothesis
You are an engineer for Bulbs ‘R Us, and you've developed a lightbulb that you claim consumes less than 5 watts per hour (wph). You want to conduct a test to prove that you're right. What is the null hypothesis and the alternative hypothesis?
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You need to test the alternative hypothesis that an average is greater than 70. If the population average is 70 and this graph shows the sampling distribution of sample averages, is a sample average of 80 likely to be statistically significant
KK Company bought a delivery truck for $62,000 on January 1,2009. They installed a rear hydraulic lift for $8,000 and paidsales tax of $3,000. In addition, KK paid $2,400 for aone-year insurance policy and $500 for registration fees.
A cosmic ray proton is moving at such a speed that it can travel from the moon to earth in 1.70 s. (Assume Earth-moon separation is 3.8 108 m and the speed of light is 3. 108 m/s.) (a) At what fraction of the speed of light is the proton moving?
An alcohol solution contains 6% ethanol by mass. This solution is fed to a distillation process which results in a concentrated product (90% ethanol by mass) and an "ethanol free" product (0.005% ethanol by mass).
You are an engineer for Bulbs ‘R Us, and you've developed a lightbulb that you claim consumes less than 5 watts per hour (wph). You want to conduct a test to prove that you're right. What is the null hypothesis and the alternative hypothesis
The records of two representative patients were analyzed, usingthe activity rates. The activity information associated withthe two patients is as follows:
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"The Big Three select suppliers on the basis of lowestprice and annual price reductions," said Neil De Koker,president of the Original Equipment SuppliersAssociation.
Factory overhead cost is applied to jobs at the rate of $1,200per copy machine hour. There were additional 1,000 copied CDspackaging, and manuals waiting to be assembled on December 31,2008.
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