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There are two types of machines called type A and type B. Both type A and type B can be used to produce a certain product. The production manager wants to compare efficiency of the two machines. He assigns each of the 15 workers to both types of machines to compare their hourly production rate. In other words, each worker operates machine A and machine B for one hour each. These two samples are independent.
True
False
An alcohol awareness task force at Big-Ten university sampled 20 students after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying
a study looked at the relationship between condom use and the spread of aids by following heterosexual couples in which
The Ludlow Wildcats baseball team, a minor league team in the Cleveland Indians orgainzation, plays 70 precent of their games at night and 30 percent during the day.
What is the best prediction for the number of complaints that will be registered for an installer who takes five sick days during the period and correlation between number of sick days and number of customer complaints statistically ..
30 students are female what would her confidence interval be if she requires the confidence level of 80%? Determine the point estimate (p) for percentage of engineering students that are female?
assume that 64 of twins are of the same gender. given that a newborn set of twins is of the same gender what is the
the distribution of a population of mechanical aptitude test is normal with a mean of 46 and a standard deviation of 4.
An industrial engineer at Lyons Products would like to determine whether there are more units produced on the afternoon shift than on the morning shift.
Construct a 99% confidence interval for the population mean tread wear for this type of tire.
an adiabatic heat exchanger is used to heat cold water at 8 deg c entering at a rate of 3kgs by hot air at 150 deg c
a battery manufacturer claims that the lifetime of certain type of battery is normal with population mean of 50 hours
Data from a National Health Survey show that men's average weight is normally distributed with a mean of 172 pounds and a standard deviation of 29 pounds.
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