SRIS Ch.5 Test

What is the lower outlier boundary of this numerical distribution? 22, 14, 10, 24, 7, 16, 3, 20, 23, 18, 13 

• -8
• -2
• 4
• 10

What is the best description of the shape of this numerical distribution?   7, 3, 4, 8, 8, 6, 9, 5, 1, 0, 6, 9, 9, 8, 5, 7, 10, 9, 7, 9 

• skewed to the right
• skewed to the left
• roughly symmetrical
• upwardly mobile

Which textbook website applet would be best to compare the numbers of strikeouts by the best 50 pitchers in 1987 with the best 50 pitchers in 2014, in order to test whether an observed difference is statistically significant?

• Difference in Means or Medians
• Difference in Proportions
• Proportion/Number of Successes Given Ability
• Streaks

Tags

CCSS.7.SP.B.3

In the 2010-11 regular season Kevin Durant of the Oklahoma City Thunder made 711 out of 1538 field goal attempts.  Three years later he made 849 field goals out of 1688 attempts. In which season did he have the higher average of made field goals, and by how much? (3 dec. places)  

• 2010-11 was higher by .041
• 2013-14 was higher by .041
• 2013-14 was higher by .138
• it is not possible to know with the given information

Tags

CCSS.6.RP.A.3A

Which value can be calculated from parts of the 5-number summary of a numerical distribution?

• QIV
• Mean
• UOB
• number of data values in the distribution

Tags

CCSS.6.SP.B.5C

If one card is picked at random from a regular deck of playing cards, what is the probability that it is a picture card (J, Q, or K) or a Diamond  ?

• 25/32
• 1/52
• 11/26
• 12/13

Tags

CCSS.HSS.CP.B.7

 Amanda did a hypothesis test about a batter who had a long streak of hits.  Later it turned out that she had made a Type I error.  What had her original conclusion been?   

• she did not reject the null hypothesis 
• she did not reject the alternative hypothesis 
• she rejected the null hypothesis 
• she calculated the test statistic incorrectly

Which choice lists two parts of a hypothesis test?

• test statistic and p-value
• general addition rule and general multiplication rule
• response variable and explanatory variable 
• observational study and experiment

 If A and B are mutually exclusive events, and P(A) = .183 and P(B) = .432, then what is P(A U B), correct to 3 decimal places?

• .615
• .079
• .891
• .192

Tags

CCSS.HSS.CP.B.7

In a hypothesis test, if the p-value is lower than the significance level, what are you likely to do? 

• reject the test statistic
• reject the alternative hypothesis
• not reject the null hypothesis
• reject the null hypothesis