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

Name: The mean arrival rate of flights at O'Hare Airport in marginal weather
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Description: 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 margin

212 198 187 214 185 219 198 193 208 197 206 184 223…

Answered: 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…

MATLAB: An Introduction with Applications

6th Edition

ISBN: 9781119256830

Author: Amos Gilat

Publisher: John Wiley & Sons Inc

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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.

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

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

Test statistic

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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