# 2 2 pts the symbol representing a standard deviation

• Notes
• 27
• 89% (63) 56 out of 63 people found this document helpful

This preview shows page 14 - 19 out of 27 pages.

2 / 2 pts The symbol representing a standard deviation calculated by using a sample to estimate the population standard deviation is:<br> The symbol representing a standard deviation calculated by using a sample to estimate the population standard deviation is: s. Std. Dev.
s. sd. Question 28 Correct! 2 / 2 pts When attempting to find a percentage associated with a <i>z</i> score, the second step involves looking up:<br> When attempting to find a percentage associated with a z score, the second step involves looking up:
Question 29 Correct! 2 / 2 pts Before hypothesis testing and at the beginning of a study, a researcher is advised to conduct a(n) ________ because it ________.<br> Before hypothesis testing and at the beginning of a study, a researcher is advised to conduct a(n) ________ because it ________.
Question 30 Correct! 2 / 2 pts The first step in conducting the single-sample <i>t</i> test is:<br> The first step in conducting the single-sample t test is:
Question 31 Correct! 2 / 2 pts
A confidence interval is a(n) ________ that includes the population mean after repeatedly sampling.<br> A confidence interval is a(n) ________ that includes the population mean after repeatedly sampling. interval estimate point estimate probability hypothesis
Question 32 Correct! 2 / 2 pts Which of the following statements is <i>not</i> an assumption of the <i>z</i> test?<br> Which of the following statements is not an assumption of the z test?
Question 33
Correct! 2 / 2 pts Skip to question text. The average salary for all 27 Arizona Diamondbacks in the 2005 baseball season was \$2,308,488, with a standard deviation of \$3,427,508. The population, all National League baseball players in 2005, earned an average salary of \$2,585,804, with a standard deviation of \$3,500,708. Does the average salary of the Diamondbacks players differ from that of all players in the National League? What statistical analysis would we use to answer this question?
Question 34 Incorrect 0 / 2 pts Skip to question text. Imagine that a study of memory and aging finds that younger participants correctly recall 55% of studied words, older participants correctly recall 42% of studied words, and the size of this effect is Cohen's d = 0.49. According to Cohen's conventions for interpreting d , this effect is: