The manufacturer of a new vitamin (vitamin x) decides to sponsor a study to determine the vitamin’s effectiveness in curing the common cold. five hundred college students having a cold were recruited from colleges in the san diego area and were paid to participate as subjects in this study. the subjects were each given two tablets of vitamin x a day. based on information provided by the subjects themselves, 457 of the 500 subjects were cured of their colds within 3 days. (the average number of days a cold lasts is 4.87 days.) as a result of this study, the manufacturer launched an advertising campaign based on the claim that “vitamin x is more than 90% effective in curing the common cold.”
a: describe as specifically as you can the target population for the study
b: describe the sampling frame for the study
c: was the study a controlled study? explain
d: list four possible causes other than the effectiveness of vitamin c itself that could have confounded the results of the study

answer:

i know the answer but im not telling you bro go study your work and stop cheating

step-by-step explanation:

not tellin you

it can be to see completed examples before writing, in order to examine what makes for an effective piece. see how these intros give some context before posing the topic and lead naturally into the body paragraphs, where the evidence will be listed. you can imagine how the author has organized the rest of the piece.

"we buried my cousin last summer. he was 32 when he hanged himself from a closet coat rack in the throes of alcoholism, the fourth of my blood relatives to die prematurely from this deadly disease. if america issued drinking licenses, those four men—including my father, who died at 54 of liver failure—might be alive today. that is a good example piece   some steps that are .

. writing something that happened to you

.read a book you like to get ideas from there

. lastly you can make a venn diagram

hope this plz make brainliest

step-by-step explanation:

b if for most of the graph

d if y intercept

step-by-step explanation: