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In the regression analysis involving 25 observations following estimated regresion equation was developed. hat(Y) = 10 - 18x1+3x2+14x3 also follwoing standard errors and sum of squers were obtained.
sb1=3 sb2=6 sb3=7SST=4800 SSE 1296
Test stastic for testing significance of model is?
For sample of size 100, what is the mean and standard deviation of the sample mean.
Assume that the population of heights of male college students is approximately normally distributed with mean m of 68 inches and standard deviation s of 3.75 inches. A random sample of 16 heights is obtained.
Determine the p-value; and at 95% confidence, test the above hypotheses.
Discuss the purpose of transforming raw scores into standard scores. Describe what "normal distribution" means. Describe measures of variability and explain how they can help therapist understand assessment data.
The local operations manager for the IRS must decide whether to hire 1, 2, or 3 temporary workers. He estimates that net revenues will vary with how well taxpayers comply with the new tax code.
Fitting a straight line to a set of data yields the following prediction line: i=2+5xi
For many years TV executives used the guideline that 30 percent of the audience were watching each of the prime-time networks and 10 percent were watching cable stations on a weekday night.
Suppose that you are interested in determining the effectiveness of an intensive supervision program (ISP) for poor student performers. To examine its effectiveness, you keep track of 12 students entering an ISP for one year and tabulate the numbe..
We wish to estimate the population proportion. We want to be 95 percent confident of our results and we want the estimate to be with .01 of the population parameter. No estimate of the population proportion is available. What value should we use f..
Assume if random samples of size n = 9 are selected can we say anything about the distribution of sample means.
A state education agency designs and administers high school proficiency exams. Historically, time to complete the exam was an average of 120 minutes.
If we select one box of cereal at random from this population, what is the probability that it will weigh less than 915 grams?
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