A nationwide survey of 100 boys and 50 girls in the first grade found that the daily average number of boys who are absent from school is 15, with a standard deviation of 7. For girls, the average number of absentees is 10, with a standard deviation of 6. The standard deviation of the difference is .

1. according to mla citation style rules, when citing a book by more than one author, the authors' names should a. be listed alphabetically by first name. b. be listed alphabetically by last name. c. be listed in the order in which they appear on the title page. d. follow the title of the book. 2.which of the following items is not necessary to include in summary notes? a. all the information that is relevant to your topic and purpose b. complete publication information c. the time and date you read the source material d. specific examples 3. which of the following is not an objective of synthesizing sources? a. reviewing key ideas on a topic b. combining opinions and general statements c. exploring different points of view d. understanding the topic in depth 4.when punctuating quotations, commas and are placed inside the quotation marks. a. semicolons b. periods c. colons d. page numbers in parentheses 5. in academic writing, why would you prefer to rely on information from scholarly journals rather than magazines? a. authors in scholarly journals are generally specialists in their field. b. magazines use every-day experiences and discuss popular topics. c. scholarly journals never include visuals. d. scholarly journals are more difficult to find, and therefore more valuable. 6.when punctuating direct quotations, use a after the verb that introduces the quotation. a. comma b. dash c. colon d. seimicolon

Which answer best explains the consequences of the mass hysteria that took place during the salem witch trails

Which is it? the desert is than the mountains? 1. drier 2. more dry