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A Schoolteacher Is Worried That the Concentration of Dangerous,cancer-Causing Radon

Question 4

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A schoolteacher is worried that the concentration of dangerous,cancer-causing radon gas in her classroom is greater than the safe level of 4pCi/L.The school samples the air for 36 days and finds an average concentration of 4.4pCi/L with a standard deviation of 1pCi/L.To test whether the average level of radon gas is greater than the safe level,the appropriate hypotheses are _____________________.


A) A schoolteacher is worried that the concentration of dangerous,cancer-causing radon gas in her classroom is greater than the safe level of 4pCi/L.The school samples the air for 36 days and finds an average concentration of 4.4pCi/L with a standard deviation of 1pCi/L.To test whether the average level of radon gas is greater than the safe level,the appropriate hypotheses are _____________________. A) B) C) D)
B) A schoolteacher is worried that the concentration of dangerous,cancer-causing radon gas in her classroom is greater than the safe level of 4pCi/L.The school samples the air for 36 days and finds an average concentration of 4.4pCi/L with a standard deviation of 1pCi/L.To test whether the average level of radon gas is greater than the safe level,the appropriate hypotheses are _____________________. A) B) C) D)
C) A schoolteacher is worried that the concentration of dangerous,cancer-causing radon gas in her classroom is greater than the safe level of 4pCi/L.The school samples the air for 36 days and finds an average concentration of 4.4pCi/L with a standard deviation of 1pCi/L.To test whether the average level of radon gas is greater than the safe level,the appropriate hypotheses are _____________________. A) B) C) D)
D) A schoolteacher is worried that the concentration of dangerous,cancer-causing radon gas in her classroom is greater than the safe level of 4pCi/L.The school samples the air for 36 days and finds an average concentration of 4.4pCi/L with a standard deviation of 1pCi/L.To test whether the average level of radon gas is greater than the safe level,the appropriate hypotheses are _____________________. A) B) C) D)

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