Instruction
Hypothesis Test - Download the data set “Airport Speeds” in your preferred technology format (StatCrunch, Statdisk, Excel). Column 2 denotes the data speeds (Mbps), taken from 50 different airports, for the carrier Verizon. Column 4 denotes the data speeds (Mbps) for the carrier AT&T from the same 50 airports.
Using technology (StatCrunch, Statdisk, or Excel) compute the mean data speed for each of the two carriers, Verizon and AT&T. Provide a printout of your technology output using the Insert/Edit Image feature (no attachments!) Based on this, which carrier do you think has the faster speed?
Next, using technology (StatCrunch, Statdisk, or Excel) conduct a hypothesis test to test your claim about which carrier has the faster speed. Explain which test you conducted and why that is the appropriate test for this example. Provide a printout of your technology output using the Insert/Edit Image feature (no attachments!) Explain your conclusion in statistical and non-statistical terms and how you arrived at that conclusion. Be sure to follow the 8-step procedure on page 360, using technology to do your calculations. You should include your null and alternative hypothesis (in English and in symbolic form), your significance level, whether you are conducting a right tailed, left tailed, or two tailed test, p-value, and conclusions.
AIRPORT CODE VERIZON SPRINT AT&T T-MOBILE
RSW 38.5 13.0 9.7 8.6
ORD 55.6 30.4 8.2 7.0
SNA 22.4 15.2 7.1 18.5
MEM 14.1 2.4 14.4 16.7
MKE 23.1 2.7 13.4 5.6
IND 24.5 2.1 30.6 3.2
DCA 6.5 0.8 14.4 16.2
LAS 21.5 1.6 17.0 6.9
CMH 25.7 5.6 3.8 27.3
PIT 14.7 4.0 12.4 10.1
ATL 77.8 0.4 33.9 27.3
MDW 71.3 2.5 5.5 13.3
BWI 43.0 3.4 12.7 3.2
RDU 20.2 2.7 11.0 5.4
FLL 15.5 10.6 4.8 4.3
SMF 13.7 0.3 17.5 23.5
SEA 11.1 1.6 8.0 15.0
IAD 13.5 2.7 14.7 4.2
MCI 10.2 1.1 9.5 13.5
LGA 21.1 3.8 13.8 4.7
CLE 15.1 0.5 7.6 24.7
MCO 14.2 1.2 9.5 22.2
PDX 4.5 5.0 6.5 15.0
CLT 7.9 1.1 9.1 4.4
TPA 9.9 14.1 5.3 16.1
DFW 10.3 0.6 10.0 14.8
BOS 6.2 1.0 11.7 9.6
SJC 17.5 3.6 2.7 7.4
MIA 22.2 4.0 4.0 5.0
DTW 13.1 0.5 22.4 4.4
LAX 18.2 15.1 3.0 0.7
AUS 28.5 0.5 29.0 5.1
SLC 15.8 3.2 4.0 2.8
HNL 15.0 0.5 5.1 10.9
HOU 11.1 2.1 2.7 3.6
DEN 11.8 0.3 8.1 12.7
OAK 16.0 0.4 6.0 22.5
IAH 10.9 0.4 10.2 23.8
PHX 1.8 0.6 7.6 13.3
DAL 34.6 0.2 37.4 5.1
JFK 4.6 1.2 21.0 9.8
SFO 12.0 0.7 2.8 2.5
SAT 11.6 0.3 4.5 11.7
STL 3.6 8.2 2.2 17.3
BNA 1.9 2.3 4.6 9.5
MSY 7.7 0.3 6.3 1.4
PHL 0.8 0.5 7.5 5.9
EWR 4.5 9.6 9.3 13.4
MSP 1.4 0.3 10.0 16.7
SAN 3.2 0.3 2.7 2.6