# Project #71263 - Stats

Final

Statistics 2000

Comprehensive

Use the following setting to answer questions 1 through 8. A study was conducted, in Germany, on 791 victims of heart attacks to see if certain days of the week were associated with more or less than their share of heart attacks. Here are the results by day of the week and the number of heart attacks that occurred on that particular day.

Day                 Attacks

Monday          145                              [You might want to write these results down

Wednesday     111                              when answering questions 1 through 8]

Thursday        120

Friday             97

Saturday          115

Sunday            98

Total               791

1.  If the day of the week is “fair” in relation to the number of heart attacks, based on this study how many should occur on any given day?

a.  1/7              b.  791             c.  113             d.  7

2.  What is the margin of error associated with this study?

a.  .143                        b.  .036            c.  .001                        d.  7

3.  What is your estimate of the probability of heart attacks occurring on Monday?

a.  .143                        b.  .183            c.  .036                        d.  .145

4.  If the day of the week is “fair” in relation to the number of heart attacks, what should be the probability of a heart attack occurring on Monday?

a.  .143                        b.  .183            c.  .036                        d.  .145

5.  If the relative frequency of heart attacks occurring on Friday is .123 and the margin of error is .021, then does this study indicate day of the week for Friday is “fair” or not?

a.  Fair             b.  Not Fair

a.     Fewer heart attacks occur than expected on Friday if “fair”

b.     More heart attacks occur than expected on Friday if “fair”

c.     The number of heart attacks that occur on Friday is what was expected if “fair”

7.  If the relative frequency of heart attacks occurring on Monday is .185 and the margin of error is .035, then does this study indicate day of the week for Monday is “fair” or not?

a.  Fair             b.  Not Fair

a.     Fewer heart attacks occur than expected on Monday if “fair”

b.     More heart attacks occur than expected on Monday if “fair”

c.     The number of heart attacks that occur on Monday is what was expected if “fair”

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Caf Group                  8     6     7     9     5     7     8     9     6     4     5     7     8     6     10

Decaf Group              6     6     8     6     4     6     4     8     7     4     5     5     6     7      8

9.  The hypothesis in the problem setting is what type of hypothesis?

a.  Null            b. Alternative              c.  Test

10.  What is the mean of the Caf Group?

a.  6.00                        b.  7.00            c.  9.00                        d.  1.00

11.  What is the mode of the Caf Group?

a.  6.00                        b.  7.00            c.  8.00                        d.  6.00, 7.00, and 8.00

12.  What is the range for the Caf Group?

a.  4 to 10        b.  10               c.  6                 d.  7

13.  The Decaf Group is what type of a group?

a. Treatment                b. Comparison            c. Control        d. Placebo

14.  What is the median of the Decaf Group?

a.  8.00                        b.  7.00            c.  6.00                        d.  1.00

15.  What is the first quartile (Q1) for the Decaf Group?

a.  4                 b.  5                 c.  6                 d.  7

16.  What is the third quartile (Q3) for the Decaf Group?

a.  4                 b.  5                 c.  6                 d.  7

17.  Which of the following depicts the skewness of the Decaf Group?

a.     Very slightly right skewed

b.     Very slightly left skewed

c.     Symmetric

d.     Non-symmetric

For questions 17 through 22 ASSUME

Caf Group      Decaf Group

Mean                                         7.00                 6.00

Sum of Squared Deviations     40.00               28.00

18.  What is the deviation associated with the smallest score in the Caf Group?

a.  1.0              b.  8.0              c.  4.0              d.  -3.0

19.  What is the squared deviation associated with the largest score in the Caf Group?

a.  3.0              b.  9.0              c.  -3.0             d. None of these

20.  What is the variance of the Caf Group?

a.  40.00          b.  2.67            c.  2.86                        d. 1.69             e.  None of these

21.  What is the standard deviation of the Decaf Group?

a.  28.00          c.  1.37                        d.  2.00            d.  1.41            e.  None of these

22.  What is the level of measurement for the variable in this alertness study?

a. Categorical               b.  Ordinal         c.  Ratio         d. # of questions answered correctly

23.  Based on the results to be assumed (just above question 17), “Does caffeine seem to enable the participants in this study to be more alert?

a.     Yes, because the mean of the Caf Group is larger than the mean of the Decaf Group

b.     Yes, because the sum of squared deviations is larger for the Caf Group than it is for the Decaf Group

Match the numbers 24 through 31 with the letters “A” through “H” (each letter is to be used once and only once)

24.  Relative frequency                                                           A.  Design

25.  Fair                                                                                   B.  Dependent variable

26.  A variable used to predict another variable                     C.  H0

27.  Total net gain = total net loss                                          D.  Estimate of Probability

28.  A manner in which an experiment is conducted              E.  HA

29.  A supposition which is tentatively accepted to              F.  Independent variable

explain certain facts to provide a basis for

further investigation.

30.  A statement about a population that we would              G. EV = 0

like to demonstrate is true or correct.

31.  A variable that is predicted by another variable              H.  Pr(event) =

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32.  What level of measurement is the variable movie category?

a. Categorical               b.  Ordinal                   c.  Ratio           d.  Quantitative

33.  What level of measurement is the variable grade in class in percent?

a. Categorical               b.  Ordinal                   c.  Ratio           d.  Qualitative

34.  What level of measurement is the variable annual salary measured according to the scale (1=under \$20,000; 2=\$20,001 to \$30,000; 3=\$30,001 to \$40,000; 4=over \$40,000)

a.  Categorical b.  Ordinal                   c.  Ratio           d.  Qualitative

35.  What is the difference between a scatterplot and a time plot?

a.     Scatterplot has two variables and a time plot has only one.

b.     Scatterplot and time plot are the same, except a time plot uses time in its vertical axis.

c.     Scatterplot and time plot are the same, except a time plot uses time in its horizontal axis

d.     No difference, they are two names for the very sample plot.

36.  The plot of the daily Dow Jones Average over the past year would be?

a.  Index           b.  Time Plot               c.  Scatterplot              d.  Time Series

37.  Is a person’s attitude about the death penalty related to her or his attitude about gun control?

a.     Form 1 question                b.  Form 2 question                 c.  Form 3 question

38.  Does a person’s attitude about freedom of speech predict her or his attitude about the right to criticize government officials?

a.  Form 1 question                b.  Form 2 question                 c. Form 3 question

39.  In general what might you think the relationship between altitude and temperature might be?

a.  Negative Correlation          b.  Positive Correlation           c.  Zero Correlation

40.  In general what might you think the relationship between the GPA (Grade point average) in high school and GPA in college might be?

a.  Negative Correlation          b.  Positive Correlation           c.  Zero Correlation

Match the following statements (41 through 45) with the personal probability rule (A through E) that is being illustrated.

41.  Good things only happen to me                                      A.  Detailed Imagination

42.  If I have heard it once, I have heard it 100 times             B.  Representativeness Heuristic

43.  Once I saw the image on the TV, I couldn’t get              C.  Optimism

D.  Anchoring

44.  The longer I listened to the story, the more it

seemed so real                                                                  E.  Availability Heuristic

45.  Everything the fortune teller told me agreed

completely with what I already knew

Match the number 46 through 50 with the letters “A” through “E.”

46.  Biased Sample Selection                                      A.  Salk Study

47.  Roosevelt versus Landon                                     B.  1970 Draft Lottery

48.  The Biggest Public Health Experiment Ever        C.  Expected Value

49.  Break the Bank at Monte Carlo                           D.  Literary Digest

50.  Insurance Company Rates                                   E.  Margin of Error

 Subject Mathematics Due By (Pacific Time) 05/15/2015 09:30 pm
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