Need help with #82 - #84 please. The following 14 questions (Q78 to 091) are bas

Question

Need help with #82 - #84 please.

The following 14 questions (Q78 to 091) are based on the following example: A researcher wants to determine whether high school students who attend an SAT preparation course score significantly different on the SAT than students who do not attend the preparation course. For those who do not attend the course, the population mean is 1050 (?- 1050). The 16 students who attend the preparation course average 1150 on the SAT, with a sample standard deviation of 300. On the basis of these data, can the researcher conclude that the preparation course has a significant difference on SAT scores? Set alpha equal to.05. 078: The appropriate statistical procedure for this example would be a A. z-test B) t-test 079: Is this a one-tailed or a two-tailed test? A. one-tailed B) two-tailed 10 Set up the criteria for making a decision. That is, find the critical value using an alpha 05. (Make sure you are sign specific:+;; or t) (Use your tables) Q82: Summarize the data into the appropriate test statistic. Steps: 083: What is the numeric value of your standard error? 984: What is the z-value or t-value you obtained (your test statistic)? 085: Based on your results (and comparing your Q84 and Q82 answers) would you A reject the null hypothesis B. fail to reject the null hypothesis

Explanation / Answer

Ans 82

Critical value for alpha 0.05 is 1.753 from statistical table

Ans 84

T test statistic value is

1.3333

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