In a quantitative study, some implemented a pre-test and post-test, for example, asking students to take...
In a quantitative study, some implemented a pre-test and post-test, for example, asking students to take an exam before the lecture and after the lecture again. Should you consider this method as a threat to the validity or not? Why?
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In a quantitative study, some implemented a pre-test and
post-test, for example, asking students to take...
A new SAT study course is tested on 12 individuals. Pre-course and post-course scores are recorded....
A new SAT study course is tested on 12 individuals. Pre-course and post-course scores are recorded. Of interest is the average increase in SAT scores. The following data is collected. Conduct a hypothesis test at the 5% level. Pre-course score NOTE: If you are using a Student's t-distribution for the problem, including for paired data, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) Pre-course score Post-course score 1230 1340...
A study was completed with 52 junior-level accounting majors enrolled in Intermediate Financial Accounting. Students took...
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Tom tells you that he has a history exam coming up in 5 days, and he...
Tom tells you that he has a history exam coming up in 5 days, and he has 5 chapters to read before the exam. He says he's going to wait and read them all the day before the exam, even if he has to stay up all night, so the material will be fresh in his mind. What advice should you give Tom, and why? It's too late to try to learn the information in the textbook. Ask the instructor...
A professor notes that many of her students take notes on their laptops, while others take...
A professor notes that many of her students take notes on their
laptops, while others take notes using paper. She wonders if using
a laptop is as effective as handwriting notes because typing allows
students to take notes much faster. Although this increased speed
does allow for more information to be written, it also does not
require as much processing of the information. While taking notes
by hand, students must process the information and decide what is
important. To test...
Example 7: CAOS Comparisons (Paired Differences) The CAOS (Comprehensive Assessment of Outcomes in Statistics) exam is...
Example 7: CAOS Comparisons (Paired Differences) The CAOS (Comprehensive Assessment of Outcomes in Statistics) exam is an online multiple choice test on concepts covered in a typical introductory statistics course. Students take one version before the start of the course and another version after the course ends. Before and After scores for a possible random sample of 10 students are shown in the table. (An actual random sample of scores are given in Exercise C.68 on page 455 of the...
This pre- and post-interventional study was conducted at a metropolitan, not-for-profit, Magnet®-designated facility in the northwestern...
This pre- and post-interventional study was conducted at a metropolitan, not-for-profit, Magnet®-designated facility in the northwestern United States. Registered nurses (RNs) and certified nurse assistants (CNAs) from a medical-surgical PCU were invited to participate. The intervention included an educational in-service for nursing staff, implementation of an oral care protocol, and adoption of a daily oral hygiene kit located at the bedside. Data were collected via retrospective chart audit for patients who met inclusion criteria. Staff knowledge was assessed using an...
Revised 4-28-16 Options for Assignment 7 Exploring Graduate School (and some professional schools) One main purpose...
Revised 4-28-16 Options for Assignment 7 Exploring Graduate School (and some professional schools) One main purpose of Assignment 7 is to introduce you to graduate school. Graduate school is something most students have heard of but do not know much about. Students tend to think it is: a) just more "schooling" and b) probably very costly. Neither is necessarily true. In fact, graduate work is very different than undergraduate work and it can be largely cost-free. Some students will also...
You have been given an encrypted copy of the Final exam study guide here, but how do you decrypt and read it??? Along with the encrypted copy, some mysterious person has also given you the following documents: helloworld.txt -- Maybe this file decrypts
You have been given an encrypted copy of the Final exam study guide here, but how do you decrypt and read it???Along with the encrypted copy, some mysterious person has also given you the following documents:helloworld.txt -- Maybe this file decrypts to say "Hello world!". Hmmm.hints.txt -- Seems important.In a file called pa11.py write a method called decode(inputfile,outputfile). Decode should take two parameters - both of which are strings. The first should be the name of an encoded file (either helloworld.txt or superdupertopsecretstudyguide.txt or...
1) Describe the data collection procedure. F This pre- and post-interventional study was conduct...
1) Describe the data collection procedure. F This pre- and post-interventional study was conducted at a metropolitan, not-for-profit, Magnet®-designated facility in the northwestern United States. Registered nurses (RNs) and certified nurse assistants (CNAs) from a medical-surgical PCU were invited to participate. The intervention included an educational in-service for nursing staff, implementation of an oral care protocol, and adoption of a daily oral hygiene kit located at the bedside. Data were collected via retrospective chart audit for patients who met inclusion...
A student study of the effects of caffeine asked volunteers to take a memory test 2...
A student study of the effects of caffeine asked volunteers to take a memory test 2 hours after drinking soda. Some drank caffeine-free, some drank regular, and others drank a mixture of the two. The 5-number summaries for each group's scores (number of items recalled correctly) on the memory test are shown below. Complete parts a)-d). Min 17 16 01 19 19 16 Median 20 21 03 26 25 23 15 No Caffeine Low Caffeine 15 High Caffeine 15 24...
Tom tells you that he has a history exam coming up in 5 days, and he has 5 chapters to read before the exam. He says he's going to wait and read them all the day before the exam, even if he has to stay up all night, so the material will be fresh in his mind. What advice should you give Tom, and why? It's too late to try to learn the information in the textbook. Ask the instructor...
A professor notes that many of her students take notes on their
laptops, while others take notes using paper. She wonders if using
a laptop is as effective as handwriting notes because typing allows
students to take notes much faster. Although this increased speed
does allow for more information to be written, it also does not
require as much processing of the information. While taking notes
by hand, students must process the information and decide what is
important. To test...
Example 7: CAOS Comparisons (Paired Differences) The CAOS (Comprehensive Assessment of Outcomes in Statistics) exam is an online multiple choice test on concepts covered in a typical introductory statistics course. Students take one version before the start of the course and another version after the course ends. Before and After scores for a possible random sample of 10 students are shown in the table. (An actual random sample of scores are given in Exercise C.68 on page 455 of the...
A student study of the effects of caffeine asked volunteers to take a memory test 2 hours after drinking soda. Some drank caffeine-free, some drank regular, and others drank a mixture of the two. The 5-number summaries for each group's scores (number of items recalled correctly) on the memory test are shown below. Complete parts a)-d). Min 17 16 01 19 19 16 Median 20 21 03 26 25 23 15 No Caffeine Low Caffeine 15 High Caffeine 15 24...
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