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What is a discrete random variable and how does it differ from a continuous random variable? Give examples.
We suspect that automobile insurance premiums (in dollars) may be steadily decreasing with the driver's driving experience (in years), so we choose a random sample of drivers who have similar automobile insurance coverage and collect data about th..
A random sample of students is selected, and each one is asked to try first brand A and then brand B, or vice versa with the order determined at random.
Construct a test of 20 objective type items in your subject. Administer test to a group of 50 students conduct an item analysis and write a report. Explain the meaning of co-efficient of correlation. Why does the homogeneity and heterogeneity of sco..
It is impossible to get a negative value for an F -ratio.
Jamie expects that a bulb will last for 400 to 500 days, what is the probability of an Acme bulb satisfying that?
Set up hypotheses and carry out all relevant tests. Describe all results and implications which you have discovered.
Explain the terms parameter and statistics. Make sure the concepts of population and sample are included in the definitions.
Suppose today's sample yielded a mean of $4.19 and a standard deviation of $0.10, create and interpret a 99% confidence interval for the population standard deviation. Assume the distribution of gas prices in the area follows a normal distribution..
A "random survey" was conducted of 3274 people of the "microprocessor generation" (people born since 1971, the year the microprocessor were invented). It was reported that 48% of those
Inspect table produced in question 2 above. Comment on relative sensitivity of minimum sample size to actual proportion and to desired half width.
A defective picture tube was discovered in the latest shipment. What is the probability that it came from Tyson Wholesale?
Using one mean t test to determine whether or not to support the claim - hypothesis test that WORKS THE SAME as the z-test
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