Referring to question 29, the probability of making a Type II error is _________.
a. 0.7764 c. 0.2236
b. 0.2400 d. 0.6459
Question 2
An English teacher has been teaching a sixth grade composition class for many years. He has the feeling that over the past several years, the writing ability of students has changed. A national test of proficiency in composition was administered 5 years ago. The resulting distribution of scores was normally shaped, had a mean of 85 and a standard deviation of 10.9 . In order to test his feeling, he gives his present class of 43 students the same proficiency test. The resulting mean is 80 and the standard deviation is 8.7 . Using the z test with = 0.052 tail, what is your conclusion?
a. reject H0; the present class appears deficient in composition writing
b. retain H0; the present class is not deficient in composition writing
c. accept H0; the present class is not deficient in composition writing
d. reject H0; the present class is not deficient in composition writing
Generally, the total tax burden in the United States is much lower than that of other industrialize
Feast-making spoon (Wunkirmian). Liberia/IvoryCoast.
Kitagawa Utamaro, The Fickle Type, from the series Ten Physiognomies of Women.
this is a math question
economic question
Wild-type flowers of Arabidopsis