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Suppose that combined verbal and math SAT scores follow a normal distribution with mean 896 and standard deviation 174. Suppose further that Peter finds out that he scored in the top 3% of SAT scores. Determine how high Peter's score must have been.
A coin is flipped e times and heads (h) or tails (t) are recorded:
What is the chance that stock will fall by more than 15% next month? What extra assumption are you making when replying this question?
A person is considering purchasing the stock of two home health companies that are similar in all respects except the proportion of earnings paid out as dividends.
By using this data and incorporating seasonal effects, predict quarterly turnover for 2010.
You perform a one sample mean hypothesis test on a random sample of data and observe a p-value of 0.2157. What is the appropriate conclusion? Conclude at the 5% level of significance.
The mean of a normal distribution probability is 400 pounds. The standard deviation is 10. What is the area between 415 pounds and the mean of 400 pounds? (Round to 4 decimals)
Explain whether the symmetry definition of probability is appropriate with respect to the outcomes in the sample space.
Calculate the standard error. With 95% confidence, find out the margin of error?
Statewide real estate sales agency, Farm Associates, specializes in selling farm property in state of Nebraska. At.10 significance level, has there been an increase in selling time?
I tossed a coin 6 times and recorded the outcomes - H for heads and T for tails. The first set of tosses yielded HTHTTH and the second set of tosses yielded TTTHHH. Which set of tosses is more probable to happen? And why?
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.
What can be done to remedy multicollinearity? Use ANOVA instead of Regression.
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