​ .200 ​.708 ​.250 ​.602 ​ $18.78 to $21.23 ​18.16 to 21.84 ​$18.60 to $21.40 ​18.37 to 21.63 ​ Observations with values of 200 are included in the class ​Observations

​ .200 ​.708 ​.250 ​.602 ​ $18.78 to $21.23 ​18.16 to 21.84 ​$18.60 to $21.40 ​18.37 to 21.63 ​ Observations with values of 200 are included in the class ​Observations with values of 200 are excluded from the class ​Observations with values of 100 are excluded from the class ​The class interval is 99 ​ Ordinal ​Nominal ​Interval ​Ratio ​ $8 million ​$6.8 million ​Unable to determine from given information ​$5.6 million ​ t test for difference in paired samples ​z test for two population proportions ​z test for two population means ​t test for two population means ​ z = -2.45 ​z = -5.44 ​z = -1.81 ​z = – 3.90 ​ H1: µ ≠ 6.6 ​H1: µ ≥ 6.6 ​H1: µ > 7.6 ​H1: µ = 6.6 ​ It approaches a normal distribution. ​It cannot be predicted in advance. ​It is positively skewed. ​It is negatively skewed. ​ You would reject Ho ​You would accept Ho ​You would accept Ho if it is a two-tailed test, but reject Ho if a one-tailed test ​You can’t render a decision unless you know the computed test statistic ​ Since this was not based on the population, no conclusion can be drawn. ​Seventy percent is not in the interval, so assume it will not be supported. ​The interval estimate is above 70%, so infer that it will be supported. ​Seventy percent is not in the interval, so another sample is needed. ​ 0.3413 ​0.5000 ​0.4332 ​0.1932 ​ .0586 ​.0384 ​.0471 ​.0512 ​ 1.00 ​Very likely ​0.4332 ​0.8664 ​ Variance ​Mode ​Median ​Mean ​ .40 ​.30 ​.030 ​.50 Monday 124 Tuesday 74 Wednesday 104 Thursday 98 Friday 120 ​ No, because χ2 = 11.793 ​Yes, because χ2 = 15.308 ​No, because χ2 = 7.715 ​Yes, because χ2 = 12.288 ​ Empirical ​Mutually exclusive ​Classical ​Subjective ​ 1.96 ​6,000 ​6,400 ​2.8 ​ 0.35 ​0.55 ​0.95 ​0.05 ​ 6.92 ​10.33 ​15.85 ​9.26 ​ 13.5 and 14.5 inches ​13.9 and 14.1 inches ​13.0 and 15.0 inches ​13.8 and 14.2 inches ​ z = -1.29 ​t = -1.25 ​t = -1.07 ​z = -1.11 ​1/3 or 0.33 ​1/13 or 0.077 ​1/4 or 0.25 ​12/13 or 0.923 ​ Weight of a person ​Miles between oil changes ​Number of children in a family ​Color of ink in a pen ​ It has two modes. ​The points of the curve meet the x-axis at z = -3 and z = 3. ​It is asymmetrical. ​The mean, median, and mode are all equal. ​ Unlimited range ​0 to +1.0 ​-1.0 to +1.0 inclusive ​-3 to +3 inclusive The regression equation implies that an: ​​increase of $1 in advertising is associated with an increase of $7,000 in sales. ​increase of $1 in advertising is associated with an increase of $62,000 in sales. ​increase of $7 in advertising is associated with an increase of $7,000 in sales. ​increase of $1 in advertising is associated with an increase of $7 in sales. ​ Descriptive statistics ​Data summarization ​Statistical inference ​Data analysis ​ 32 ​29.5 ​30 ​29

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