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1. A beverage dispensing machine is calibrated so that the amount of beverage dispensed is approximately normally distributed with a population standard deviation of 0.15 deciliters.Construct a 90% confidence interval for the population mean amount of beverage dispensed by this machine based on a random sample of 36 drinks dispensing an average of 2.25 dl. Show all steps as given in the class handout.
2. Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an advance indication of illness such as gout, leukemia, or lymphoma. Over a period of months, an adult male patient has taken eight blood tests for uric acid. The mean concentration was 5.35mg/dl. The distribution of uric acid in healthy adult males can be assumed to be normal, with population standard deviation 1.85mg/dl. Construct a 95% confidence interval for the population mean concentration of uric acid in this patient's blood. Show all steps as given in the class handout.
Mensa. People with z-scores greater than 2.5 on an IQ test are sometimes classified as geniuses. If IQ test scores have a mean of 100 and a standard deviation.
The army's helmet supplier regularly stocks helmets that fit male soldiers with head circumferences between 20 and 26 inches.
Choose the correct problem formulation: It is known that 70% of the customers in a sporting goods store purchase a pair of running shoes.
Choose the group that interests you more, and organize the 50 numbers into a simple frequency distribution using the rough-draft form.
Use an appropriate 95 percent confidence interval to estimate the difference between the mean prices of the two brands of cd players. Do you think that the difference haspractical importance?
What is the probability that 5 traffic tickets will be issued at the intersection next month - who have experienced a breakup at least once during the last 10
What is the probability that both of these problems are at fault? What is the probability that there is a software problem but no overload?
Take a position on whether or not the total area under a normal distribution is in?nite. Provide an example to support your response.
The observed frequencies are 891 Insured and Surgical, 316 Uninsured and surgical, 290 Insured and medical, 119 uninsured and medical. Find out expected observations and deviation.
Our decisions depend on how the options are presented to us. Here's an experiment that illustrates this phenomenon. Tell 20 subjects that they have been given $50 but can't keep it all.
you are a serious student who studies on friday nights but your roommate goes out and has a good time. 40 of the time
the number of cracks in a section of interstate highway that are significant enough to require repair is assumed to
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