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The life corn delight popcorn maker is normally distributed with them mean of 20 months and a standard deviation of two months. The manufacturer will replace on the life popper if it breaks during the guarantee period. How long should the guarantee period be in the manufacture does no one to replace more than 3% of the poppers.
Calculate the expected value and standard deviation of the value.
would this prove that they are exceeding their goal, using α = 0.025?
If a complete failure occurs, calculate the probability that the fault occurred in:
The gambler is paid later as follows, depending on the number of winners he picked. What is his expected gain? Remember, a loss is a negative gain, and that the bookie keeps the gambler's $20.
Statistical Hypothesis test for the given sample
Using the original data, test at the 5% significance level that the population standard deviation of studying times is greater than 4 hours.
After the presidential debates, a random sample of 1200 voters showed that 540 favored the Democratic candidate; 480 were in favor of the Republican candidate; 40 were in favor of the Independent candidate, and 140 were undecided. At a 1% level of..
Determine whether the method of delivering teaching influences adherence with antiretroviral therapy.
Estimate and interpret the p-value of the calculated test statistic.
2 to every even-numbered card, with aces being 1s. Determine the frequencies of 0, 1, and 2. Use SPSS to get the value of test statistic and p-value.
Determine the Midrange. Determine the Standard Variance. Determine the Standard Deviation
At.05 level of significance, is there evidence to propose that mean life length of batteries produced by this manufacturer is more than 400 hours?
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