Four brands of routers were tested for several factors and given a score; the re
ID: 3376144 • Letter: F
Question
Four brands of routers were tested for several factors and given a score; the results are in the table:
Susie created a chart but left out several calculations;
Brand
Mean
Score for this brand
stdev
z score
Netgear
201.3
202
2
X
TP-Link
320.69
330
2.66
Y
Synology
125.29
W
6
0
Asus
58.95
57.06
5.4
Z
Fill in the chart in the answer column. Round each answer to 2 decimal places.
which brand is farthest away from a z score of 0?
which brand is closest to its mean ?
X
Y
Z
W
Four brands of routers were tested for several factors and given a score; the results are in the table:
Susie created a chart but left out several calculations;
Brand
Mean
Score for this brand
stdev
z score
Netgear
201.3
202
2
X
TP-Link
320.69
330
2.66
Y
Synology
125.29
W
6
0
Asus
58.95
57.06
5.4
Z
Fill in the chart in the answer column. Round each answer to 2 decimal places.
which brand is farthest away from a z score of 0?
which brand is closest to its mean ?
X
Y
Z
W
Explanation / Answer
i) X = (202 - 201.3) / 2 = 0.35
ii) Y = (330 - 320.69) / 2.66 = 3.5
iii) since Z = (w - 125.29) / 6
0 = (w - 125.29) / 6
w - 125.29 = 0
w = 125.29
iv) Z = (57.06 - 58.95) / 5.4 = -0.35
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