8/11/2019 mintab assignment
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Minitab #4
1)
a)Variable N Mean StDev SE Mean 90% CI
C2 100 0.7000 0.4606 0.0461 (0.6235, 0.7765)
90% CI for Gender is (0.6235, 0.7765).
b)
95% Upper Exact
Variable X N Sample p Bound P-Value
C2 30 100 0.300000 0.384221 0.896
P is the proportion of females to males.
H0: p>=.25 H1: p.05
2)
a)Variable N Mean StDev SE Mean 95% CI
Height 40 127.20 13.15 2.08 (122.99, 131.41)
95% CI for height is (122.99, 131.41).
b)
Difference = mu (Interval Before) - mu (Interval After)
Estimate for difference: 1.20
95% CI for difference: (-3.03, 5.43)
T-Test of difference = 0 (vs not =): T-Value = 0.56 P-Value =
0.574 DF = 77
90% CI for difference in means before and after is (-3.03,
5.43).
c)
Variable N Mean StDev SE Mean Bound T P
Height 40 127.20 13.15 2.08 122.16 1.06 0.148
Mu is the mean height of the geyser.
H0: mu125
Do not Reject H0. P>.01
3)
a)
99% Lower
Variable N Mean StDev SE Mean BoundHT 20 68.315 3.339 0.747
66.419
99% CI for mean height is (66.419, 70.211).
b)
Difference = mu (DIAS) - mu (SYS)
Estimate for difference: -46.05
90% CI for difference: (-52.11, -39.99)
T-Test of difference = 0 (vs not =): T-Value = -12.82 P-Value =
0.000 DF = 37
8/11/2019 mintab assignment
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Minitab #4
90% CI for mean difference of DIAS and SYS is (-52.11,
-39.99).
c)
97% Upper
Variable N Mean StDev SE Mean Bound T P
CHOL 20 323.3 247.2 55.3 433.9 -0.03 0.488
Mu is the mean cholesterol level.
H0: mu>=325 H1: mu.03
d)
Variable N Mean StDev SE Mean 99% CI T P
WT 20 173.55 28.14 6.29 (155.55, 191.56) -0.23 0.821
Mu is the mean weight of men
H0: mu=175 H1: mu=/175
Do not reject H0. P>.01
4) 6.6-7
Fisher's exact test: P-Value = 0.089
P1 is the proportion of damage of light packing and P2 is the
proportion of damage of heavy packing
H0: P1-P20
Do not reject H0. P>.05
6.7-7
T-Test of difference = 0 (vs =0 H1: mu1-mu2.05
