Chapter 20 and 21

# Chapter 20 and 21 - Chapter 20 Hypothesis Testing 20.HE.A...

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Chapter 20: Hypothesis Testing 20.HE.A: Page 528, # 14 a.) Ho: p = .05 Ha: p > .05 b.) Independence Assumption: True Randomization Condition: Numbers were pulled from random children 10% Condition: The sample is less than 10% of the population Success/Failure Condition: There are more than 10 successes and ten failures c.) The p-value is 0.025 d.) There is a 2.5% chance that more children are becoming abnormal e.) Since the p-value is lower than the null hypothesis, there isn’t an increase in abnormalities 20.HE.B: Page 529, # 24 Ho: p = .02 Ha: p < .02 Independence Assumption: True Randomization Condition: True 10% Condition: True Success/Failure Condition: True The p-value is .999 The z-value is 3.50 This shows that the company is failing to meet their goal because the p-value is greater than the test hypothesis. 20.HE.C : 9 It is estimated that 1% of the population suffers from red/green color blindness (Source: USA Today). The local ophthalmology practice randomly tests 80 men. Seven are found to have this type of color blindness..

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