Using the following information, calculate the z-statistic for the z-test for one mean. 
= 101 ? = 109 
= 3.44
a. –2.32
b. 2.32
c. –2.33
d. 2.33
c. –2.33
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If children can count 10 objects accurately, can identify the numerals 1 to 10, have a good grasp of one-to-one correspondence, and can rote count accurately past 10, they are ready to
a. ?use the first-grade workbook. b. ?count quantities above 10. c. ?do written addition and subtraction problems. d. ?memorize more basic facts.
A school policy against student “loitering” is too vague to be constitutionally valid
Indicate whether the statement is true(T) or false(F).
To provide social scientists with a consistent measure of occupational prestige, this Socioeconomic Index was developed
a. Weyerhauser b. Blotts-Givens c. Hauser-Warren d. Lucent-Cirent
A researcher records the following response times to a visual stimulus: 23 ± 3.1 (M ± SD) s. Assuming these data are normally distributed, what is the probability that participants responded in 20 s or less?
A. .1660 B. .3340 C. .6660 D. The probability is not listed in the unit normal table.