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You want to compare the reliability of two machines that insert chips onto electronic cards. The main problem is the occurrence of jams in the feeding mechanism, as this requires stopping production to fix the trouble. To this aim you observe the number of jams when producing standard batches of electronic cards, resulting in the following table:
Is there a significant difference between the two machines?
At α = 0.05, is the correctness of the prediction different for the two types of cola drinkers?
forty-three percent of adults say they get their financial advice from family members. you randomly select 14 adults
Let Z be the random variable giving the number of times the second biased coin (coin #2) comes up heads. What is the probability mass function of Z? What is the mean and variance of Z?
at a local middle school 60 of students are enrolled in choir or band. if a random sample of 5 students is taken what
A random variable is normally distributed, with (population mean)= 300 pounds and (standard deviation) = 50 pounds. How small can a simple random sample be if the standard error of the mean can be no more than 20 pounds?
Determine if there is evidence to conclude that the mean number of vacations taken by married individuals is less then the number taken by single/divorced individuals using data in Excel file vacation survey.
explain how the applications of integer programming differ from those of linear programming. why is rounding-down an lp
The confidence interval must be less than 5 percentage points i.e. the confidence interval should extend at most 2.5 percentage points above and below the sample proportion?
question in a start of the twenty-first century saw many corporate scandals and many individuals lost faith in
suppose that a certain college class contains 65 students of these 35 are seniors 37 are economic majors and 7 are
Discuss any limitations (inaccurate data; incomplete information; not enough samples for testing)can have an regression analysis.
If the director wishes to estimate the mean number of admissions per 24-hour period to within 1 admission with 99% reliability, what size sample should she choose?
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