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Please find attached statistics practice quiz questions.

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Please find attached statistics practice quiz questions. Can you please
help me with the solutions so i can prepare for my actual test?

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QuizNote:It is recommended that you save your response as you complete each question.Question 1(1 point)You and your colleague are designing a study to try to determine the ideal mean cost for a discretionaryservice. You will market your service to a very large population. Your colleague thinks you will get the bestdata if you take lots of small samples. You think the data will be more reliable if you take one or two verylarge samples.Question 1 options:A) You are equally wrong-unless you use stratified sampling, you cannot expect reliable results.B):You are equally correct-there is little difference in the reliability of these sampling methods.C):You are equally correct-there is little difference in the reliability of these sampling methods.D)You are right-the means of a few large samples will yield more reliable results.SaveQuestion 2(1 point)The name given to the error committed when the null hypothesis is rejected and it is actually trueisQuestion 2 options:A) type II error.B) type I error.C) selection biasD) alternative hypothesisSaveQuestion 3(1 point)
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You are planning a prospective study to try to prove a cause and effect relationship between dipping snuffand throat cancer. First, you identify subjects who regularly dip snuff and who are free of any signs ofthroat cancer. Next, you need to identify subjects whoQuestion 3 options:A) dip snuff regularly and who currently have throat cancer.B) do not dip snuff and who are free of any signs of throat cancer.C) dip snuff regularly and who currently have significant signs of throat cancer.D) do not dip snuff and who currently have significant signs of throat cancer.SaveQuestion 4(1 point)Which statistical analysis would be the best technique to use on the following problem?A study compared the effects of retesting on the scores of students who failed a writing test.Students who did not pass on their first attempt were allowed to retest. Results showed thatstudents had higher mean scores at retest whether they attended additional training beforeretesting or not.Question 4 options:A) descriptive statsB) regressionC) T testD) ANOVASave
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