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1. Given the following three-equations system, (a) explain why this is not a simultaneous-equations model. (b) Could OLS be used to estimate each equation of this system? Why?
2. (a) What is meant by identi?cation? (b) When is an equation of a system exactly identi?ed? (c) Overidenti?ed? (d) Underidenti?ed? (e) Are these rules su?cient for identi?cation?
Suppose you toss ten coins and count the number of heads. What is the probability that the number of heads you count will lie within two standard deviations of the mean?
given that a normal distribution withnbspmu103 andnbspsigma20 given that you select a sample of n25a. what is the
when conducting a hypothesis test with chi-square analysis the null hypothesis is rejected when the differences between
question sporty cars are designed to provide better handling acceleration and a more responsive driving experience than
Four research participants take a test of manual dexterity (high scores mean better dexterity) and an anxiety test (high scores mean more anxiety). The scores are as follows.
Assume a one-tailed t -test is being applied to determine if population mean is less than $212. Level of significance chosen is 0.01 and 26 accounts are sampled. Determine the critical value?
Test the hypothesis that the annual income of teachers in areas of more than 500,000 is significantly more than those in areas of less than 100,000. Use the 5% level of risk.
a basketball player with a poor foul-shot record practices intensively during the off season. he tells the coach that
An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range.
the following estimated regression equation relates sales to inventory investment and advertising expenditure.
suppose a linear regression equation was calculated to fit the relationship between the percentage of the adult
The sample correlation coefficient between x and y is 0.375. It has been found out that the p-value is 0.256 when testing H0: ρ = 0 against the two-sided alternative H1: ρ ≠ 0. To test H0: ρ = 0 against the one-sided alternative H1: ρ > 0 at a sig..
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