Die Erdbevölkerung betrug 1960 3.0 Milliarden, 20046.4 Milliarden. a) Wie viel betrug die mittlere jährliche Zunahme (in Prozent)? b) Gleiche Zunahme vorausgesetzt: Wie viele Menschen würden im Jahre 2050 die Erde bevölkern? c) Ein UNO-Bericht rechnet für 2050 mit einer Bevölkerungszahl von 8.9 Milliarden. Berechnen Sie die mittlere jährliche Zunahme ab 2004. d) Die 50 ärmsten Länder werden, gemäss Prognose, von 600 Millionen 2004 auf 1.7 Milliarden 2050 wachsen. Welche mittlere jährliche Zunahme ab 2004 wird hier erwartet?

For an experiment comparing more than two treatment conditions or more than two groups, you should use analysis of variance (ANOVA), rather than separate \( t \) tests. True False

1. The blood pressure readings for executives are approximately normally distributed with a mean systolic blood pressure of 134 and a standard deviation of 20 . Given this information it can be concluded that: a about \( 68 \% \) of the executives have blood pressures between \( \square \) and \( \square \) b about \( 95 \% \) of the executives have blood pressures between \( \square \) and c about \( 99.7 \% \) of the executives have blood pressures between \( \square \) and d about \( 16 \% \) of the executives have blood pressures above \( \square \) e about \( 2.5 \% \) of the executives have blood pressures below \( \square \) f about \( 0.15 \% \) of the executives have blood pressures below \( \square \) g about \( 50 \% \) of the executives have blood pressures above \( \square \).

Find the standard deviation of \( x \), given that \( \Sigma 4 x^{2}=14600, \Sigma 2 x=420 \) and \( n=20 \).

Cite as características que um bom diagrama de dispersão deve ter para facilitar a interpretação dos dados.

Classifying subjects on the basis of gender is an example of what kind of measurement scale? nominal. ordinal. interval. discrete. continuous.