he mean arrival rate of flights at O'Hare Airport in marginal weather is 195 flights per hour with a historical standard deviation of 14 flights. To increase arrivals, a new air traffic control procedure is implemented. In the next 30 days of marginal weather, the mean arrival rate is 203 flights per hour.                       212 198 187 214 185 219 198 193 208 197 206 184 223 177 196 207 214 209 180 210 203 198 190 211 179 220 215 217 222 218         Click here for the Excel Data File   (a) Set up a right-tailed decision rule at α = .025 to decide whether there has been a significant increase in the mean number of arrivals per hour. Choose the appropriate hypothesis.     H1: μ > 195, reject H1 if z < 1.960 H1: μ < 195, reject H1 if z > 1.960 H0: μ ≥ 195, reject H0 if z < 1.960 H0: μ ≤ 195, reject H0 if z > 1.960 multiple choice 2 a b c d   (b-1) Calculate the test statistic. (Round your answer to 2 decimal places.)   Test statistic

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The mean arrival rate of flights at O'Hare Airport in marginal weather is 195 flights per hour with a historical standard deviation of 14 flights. To increase arrivals, a new air traffic control procedure is implemented. In the next 30 days of marginal weather, the mean arrival rate is 203 flights per hour.
 

                   
212 198 187 214 185 219 198 193 208 197
206 184 223 177 196 207 214 209 180 210
203 198 190 211 179 220 215 217 222 218
 

 

 

  Click here for the Excel Data File
 
(a) Set up a right-tailed decision rule at α = .025 to decide whether there has been a significant increase in the mean number of arrivals per hour. Choose the appropriate hypothesis.
 

 

  1. H1μ > 195, reject H1 if z < 1.960
  2. H1μ < 195, reject H1 if z > 1.960
  3. H0μ ≥ 195, reject H0 if z < 1.960
  4. H0μ ≤ 195, reject H0 if z > 1.960

multiple choice 2

  • a
  • b
  • c
  • d


 
(b-1) Calculate the test statistic. (Round your answer to 2 decimal places.)
 
Test statistic            

 

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