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State the null hypothesis

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Reference no: EM132202873

Hypothesis Testing and the z Score.

  • Criterion: Evaluate a null hypothesis based on analysis of data.
  • Data: Joan is 72 inches tall. The average (mean) height for adult women is 65 inches, and the standard deviation is 3.5 inches.

a. State the null hypothesis. 

b. State the alternative hypothesis.

c. Answer this: Joan is taller than what percentage of women in the population? (Hint: Think z score and area under the normal curve.) 

d. Answer this: Given Joan's height as compared to the population mean, do you expect to reject the null hypothesis? Explain your answer. 

Reference no: EM132202873

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