Hi there kindly assist me solve the following questions.......

6. Which of the following is an example of a situation in which an independent samples t-test would be appropriate?

a. A comparison of the SAT scores of a group of 10 students who completed a special SAT preparation course compared to the normative performance over the past 2 decades of SAT.

b. A comparison of scores of participants in a memory study in which one group of participants learn the words in alphabetical order, the second group learn the words in order of word length, and the third group do so with the usual way they learn during class.

c. A comparison of participants' scores on a skills test before and after attending a training session for improving the skill.

d. Both a) and b) are viable options.

e. None of the above warrants the use of an independent samples t-test.

7. Two variables are significantly correlated with each other with two-tailed ? =.05. If a simple linear regression is built with one of them being the predictor and the other one being the dependent variable, what would be expected? 1) With two-tailed ? = .05, R-square will be significantly different from zero. 2) With two-tailed ? = .05, the intercept term will be significantly different from zero. 3) With two-tailed ? = .05, the unstandardized regression coefficient of the predictor will not be significantly different from zero.

a. 1) only.

b. 1) and 2) only.

c. 2) and 3) only.

d. All of the above.

e. None of the above

9. When we use a sample to estimate parameters about a population, we often need to make adjustment to the estimation of its ____________, because the sample estimation is often ___________ of the population's parameter.

a. Mean; Underestimation

b. Mean; Overestimation.

c. Variance; Underestimation.

d. Both a) and c) are correct.

e. None of the above.

Which of the following is a true statement? Muhiple Choke O While researchers found it difficult to reject the random walk hypothesis for exchange rates on empirical grounds, there is no theoretical reason why exchange rates should follow a pure random walk. O While researchers found it easy to reject the random walk hypothesh for exchange robes on empirical grounds, there are strong theoretical reasons why exchange rates should follow a pure random walk O While researchers found it difficult to reject the random walk hypothesis for exchange rates on empirical grounds, there are compelling theoretical reasons why exchange rates should follow a pure random walk O mone of the optionsA Markov chain with state space S = {0, +1, +2, 13, .. } and transition probabilities specified by Pi,i+1 = p, Pli-1 = 1 - p, where 0