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The Toylot company makes an electric train with a motor that it claims will draw an average of only 0.8 ampere (A) under a normal load. A sample of twelve motors was tested, and it was found that the mean current was x = 1.18 A, with a sample standard deviation of s = 0.44 A. Do the data indicate that the Toylot claim of 0.8 A is too low? (Use a 1% level of significance.)
What is the value of the sample test statistic? (Round your answer to three decimal places.)
Find the P-value. (Round your answer to four decimal places.)
number of products with errors within a day is distributed as......x............ 0........... 1........... 2......... 3
Formulate the null and alternative hypotheses for a hypothesis test. Identify the population and describe how to select a random sample for a hypothesis test. State in clear terms the conclusion that should be given if the null hypothesis is rejec..
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The average buglary rate for a juisdiction has been 311 per year with a standard deviation of 50 what is the probability that next year the number of burglaries will be more than 350.
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