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The following two questions use the nomogram below: 0.0 0.995 000 0.99 0.1 2000 0.2 0.98 0.97 0.96 0.95 0.3 Number 0.90 0.4 0.5 Standardised
The following two questions use the nomogram below: 0.0 0.995 000 0.99 0.1 2000 0.2 0.98 0.97 0.96 0.95 0.3 Number 0.90 0.4 0.5 Standardised difference 0.6 Torre 68888888888888888 , Power 0.7 0.85 0.80 0.75 0.70 0.65 0.60 0.55 0.50 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.8 0.9 8 0.05 1.0 1.1 0.01 Significance level 0.10 1.2 0.05 a. If you designed an experiment with a standardised difference (or size-effect) of 1.1 units and a type Il error of 0.2, how many individuals would you need to measure to test the null hypothesis of no difference between two means at a significance level of 0.01? (5 marks) b. When the null hypothesis for no difference between two means is true but you reject it, what type of error will you be making? (5 marks) The following two questions use the nomogram below: 0.0 0.995 000 0.99 0.1 2000 0.2 0.98 0.97 0.96 0.95 0.3 Number 0.90 0.4 0.5 Standardised difference 0.6 Torre 68888888888888888 , Power 0.7 0.85 0.80 0.75 0.70 0.65 0.60 0.55 0.50 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.8 0.9 8 0.05 1.0 1.1 0.01 Significance level 0.10 1.2 0.05 a. If you designed an experiment with a standardised difference (or size-effect) of 1.1 units and a type Il error of 0.2, how many individuals would you need to measure to test the null hypothesis of no difference between two means at a significance level of 0.01? (5 marks) b. When the null hypothesis for no difference between two means is true but you reject it, what type of error will you be making
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