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A tire manufacturer guarntees that the mean life of a certain type of tires is at least 35,000 miles.
A.) State the null and alternative hypotheses.
B.) Say when a type I or type II error occurs for a hypothesis test of the claim.
C.) Is the hypothesis test left-tailed, right-tailed or two tailed?
Type the above data into the SPSS Data Editor window, or save this file as an unformatted text file and write SPSS syntax to read it in.
What is the probability of selecting 10 production employee at random on a hot summer day and finding that none of them are absent.
a selfless person approaches jones and smith with a 100 bill and offers to sell it to the highest bidder but both the
The maturity scores tend to be skewed (not normally distributed). Higher scores indicate higher Christian maturity. What statistical test should be used to analyze these data?
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Test this conjecture with formal hypothesis test, by using a 5% significance level. Find out the p-value for hypothesis test.
the following are body mass index bmi scores measured in 12 patients who are free of diabetes and participating in a
sales 2363 2.1 advertising - 279 price - 136 unemplpyment r2 .76what would be the expected unit sales when
However, 21% of the students neither go to all the lectures nor buys the recommended textbook. What is the probability that a randomly chosen student who buys the textbook attends every lecture?
The frequency distribution below shows the distribution for suspended solid concentration (in PPM) in river water of 50 different waters collected in September 2011.
A sample proportion is calculated from a sample size of 394. How large of a sample would we need in order to decrease the standard error by a factor of 9?
The weighs of newborn elephants are normally distributed.
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