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# Harvey_Module 5_Assignment_Graded - 24,960,270 Standard...

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Flights ONE-SAMPLE Z-TEST 210 Sample Mean 200 215 Hypothesized population mean 195 200 Population standard deviation 13 This is a Right-tailed test 189 Count 30 200 Standard error of the mean 2.373464 I think the Test statistic is 1.6449 213 Z 2.106625 and the critical value I am just not sure 202 Alpha 0.025 181 Probability one-tailed 0.017575 197 Z critical one-tailed 1.959964 199 Probability two-tailed 0.03515 193 Z critical two-tailed 2.241403 209 215 CONFIDENCE INTERVAL 192 Lower Limit 194.6801 179 Upper Limit 205.3199 196 225 Test statistic 2.106625 199 Critical value 1.959964 196 210 Reject null hypothesis because the test statistic is greater than the right-tail critical value. 199 The mean number of arrival per hour has increased. 188 174 176 202 195 195 208 222 221

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Mileage ONE-SAMPLE t-TEST 40,060 Sample Mean 33,950 33,380 Hypothesized population mean 30,000 25,090 Sample standard deviation 11866.17
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Unformatted text preview: 24,960 Count 21 24,270 Standard error of the mean 2589.411 43,380 t 1.525259 14,310 Alpha 0.10 This is also a right-tailed test 41,740 df 20 the statistic and critical value I still don't understand 23,940 Probability one-tailed 0.071427 If you could explain more after you grade these It might help me. 17,370 t critical one-tailed 1.325341 58,630 Probability two-tailed 0.369443 43,510 t critical two-tailed 1.724718 44,740 35,830 CONFIDENCE INTERVAL 53,680 Lower Limit 29483.52 44,550 Upper Limit 38415.53 25,750 31,810 Test statistic 1.525259 20,250 Critical value 1.325341 28,910 36,780 Reject null hypothesis because the test statistic is greater than the right-tail critical value. The dealer's mean is significantly greater than the national average....
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