Mathematics, 23.09.2019 18:00 oktacos
An automobile manufacturer claims that its van has a 27.6 miles/gallon (mpg) rating. an independent testing firm has been contracted to test the mpg for this van since it is believed that the van has an incorrect manufacturer's mpg rating. after testing 210 vans, they found a mean mpg of 28.0. assume the standard deviation is known to be 2.3. a level of significance of 0.05 will be used. find the value of the test statistic. round your answer to 2 decimal places.
Answers: 1
Mathematics, 21.06.2019 13:40
Use the normal approximation to the binomial distribution to answer this question. fifteen percent of all students at a large university are absent on mondays. if a random sample of 12 names is called on a monday, what is the probability that four students are absent?
Answers: 2
Mathematics, 21.06.2019 14:30
The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.
Answers: 1
An automobile manufacturer claims that its van has a 27.6 miles/gallon (mpg) rating. an independent...
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