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What are three major factors to consider when evaluating the scientific merit of quantitative and qualitative studies? Why is it important to review literature before identifying a research problem? What factors are most important in determining a research design? The response should be relevant to particular area of interest.
For a continuous random variable x, the probability density function f(x) represents the probability at a given value of x. the area under the curve at x.
Estimate the standard deviation of the x distribution. (Hint: Review the empirical rule and SD approximations). What is the probability that a healthy 10-week-old kitten will weigh less than 14 oz?
Carbon monoxide (CO) emissions for a certain kind of car vary mean 2.4 g/mi and standard deviation 0.7g/mi. A company has 60 of these cars in its fleet. Let y represent the mean CO level for the companies fleet. Estimate the probability that y is ..
Suppose 70% of kids who visit a doctor have a fever, and 25% of kids witha fever have sore throats. What's the probability that a kid who goes to the doctor has a fever and a sore throat?
Since over 10,000 students in his state took the Math SAT, he can show that the P-value for testing whether the mean score in his state is more than the national average of 480 is less than 0.0001. What we can conclude from this?
An aquarium tank can hold 7700 liters of water. There are two pipes that can be used to fill the tank. The first pipe alone can fill the tank in 77 minutes.
Differentiate between the levels of measurement by providing an example of data which can be transformed from one level of measurement to another and another example of data that cannot be transformed.
A commuter travels many miles to work each morning. She has timed this trip 5 times throughout the last month. The time (in minutes) required to make this trip was 44, 39, 41, 35, and 41.
The random variable x is known to be uniformly distributed between 1.0 and 1.5.
A simple random sample of 50 items from a population with σ 6 resulted in a sample mean of 32.
Suppose the time spent by a randomly selected student who uses a terminal connected to a local time-sharing mini-frame computer facility. What are the values of alpha and beta?
Do these data suggest that the amount of time devoted to urban problems in acceptance speeches of newly elected representatives to the U.S. Congress differ according to whether they come from rural or urban districts?
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