& Review HT 1 mean.pdf - Adobe Acrobat Pro DC (32-bit) X File Edit View E-Sign Window Help Home Tools Review HT 1 mean.... x A 1 /3 68.4% Statistics Hypothesis Testing One Sample 1. Ho: H = 50 Ha: significance level = 0.05 Co n = 36 xbar = 49 0= 5 tai _crit = a = _stat = pvalue = 2. Ho: H >= 170 Ha: significance level = 0.05 n = 16 xbar = 165 s = 10 tail _crit s a = _stat = pvalue = 3. A scientist believes the concentration of radon gas in the air is greater that the established safe level of 4pci or less. The scientist tests the composition for 16 days finding an average concentration of 4.4 pci with a sample standard deviation of 1 pci. a) In testing the scientist's belief, write the appropriate hypotheses at 1% level of significance. Ho: H = $110,000 Ha: b) What decision should be made? tail crit = D = _stat = pvalue = 5. Read the tcrit and estimate pvalue from the t tables. 5a. One tail upper tail test, alpha = 0.10, df = 10 What is tcrit? The formula calculates tstat to be 2.59. What is pvalue range? 5b. Two tail test, alpha = 0.05, df = 15 What is tcrit? The formula calculates tstat to be 1.24. What is pvalue range? Type here to search N 30 C Nuzzdulai ~ ENG 7:26 AM 5/27/2022