Suppose the mean fasting cholesterol of teenage boys in the United States is μ = 175 mg/dL with σ = 50 mg/dL. An SRS of 39 boys whose fathers had a heart attack reveals a mean cholesterol x¯x¯= 195 mg/dL. Use a two-sided test to determine if the population mean of boys whose fathers had a heart attack is significantly higher than expected. a) What are the null and alternative hypothese? b) What is SE? What is a z statistic?
Suppose the mean fasting cholesterol of teenage boys in the United States is μ = 175 mg/dL with σ = 50 mg/dL. An SRS of 39 boys whose fathers had a heart attack reveals a mean cholesterol x¯x¯= 195 mg/dL. Use a two-sided test to determine if the population mean of boys whose fathers had a heart attack is significantly higher than expected. a) What are the null and alternative hypothese? b) What is SE? What is a z statistic?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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Suppose the mean fasting cholesterol of teenage boys in the United States is μ = 175 mg/dL with σ = 50 mg/dL. An SRS of 39 boys whose fathers had a heart attack reveals a mean cholesterol x¯x¯= 195 mg/dL. Use a two-sided test to determine if the population mean of boys whose fathers had a heart attack is significantly higher than expected.
a) What are the null and alternative hypothese?
b) What is SE? What is a z statistic?
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