Statistics Fundamentals Final Milestone with CORRECT ANSWERS

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Statistics Fundamentals Final Milestone with CORRECT ANSWERS.You passed this Milestone 22 questions were answered correctly. 3 questions were answered incorrectly. 1 Which of these random samples ... represents a representative sample of the systolic blood pressure of all patients in a hospital?  The systolic blood pressure of 50 children admitted in the hospital.  The systolic blood pressure of 50 patients in the hospital.  The systolic blood pressure of 50 employees in the hospital.  The systolic blood pressure of 50 patients in the neurology department. RATIONALE For a sample to be representative it needs to look like the entire set of interest. To look like all patients in the hospital, they should be randomly sampled from the entire population not simply the neurology department or children. Employees are not a part of the population of interest. CONCEPT Random & Probability Sampling 2 Rachel recorded the number of calls she made at work during the week: Day Calls Monday 18 Tuesday 14 Wednesday 24 Thursday 16 She expected to make 18 calls each day. To answer whether the number of calls follows a uniform distribution, a chi-square test for goodness of fit should be performed. (alpha = 0.10) What is the chi-squared test statistic? Answers are rounded to the nearest hundredth.  3.11  1.52  4.61  3.27 RATIONALE Using the chi-square formula we can note the test statistic is CONCEPT Chi-Square Test for Goodness-of-Fit 3 A poll conducted a week before the school election to the student council showed that Janice would win with 63% of the vote. The margin of error was 14%. If Janice needs to receive at least half the votes to win the election, can we be confident of Janice's victory?  Yes, because the poll stated that she will win with 63% of the vote.  No, because she could receive as low as 49% of the vote.  No, because she could receive as low as 14% of the vote.  Yes, because she could receive as much as 77% of the vote. [Show More]

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