Claim: u > 1030;
alpha level = 0.05;
Sample statistics:
Sample mean = 1035,
s.d. = 23
n = 50
a) Null hypothesis:
b) Alternative hypothesis:
c) Calculated z score:
d) Area corresponding to the z:
e) P-value:
f) Decision whether to accept or reject Ho and at what % of confidence
9. For the following problem, test the claim about the population mean u at the given level of significance a using the given sample statistics. Be sure to list the following in this order.
a) Null hypothesis: Ho:
b) Alternative hypothesis:
c) Alpha level:
d) Degrees of freedom:
e) Table t-value from Table F:
f) Calculated t value:
g) Decision whether to accept or reject Ho and at what % of confidence
Claim: u > 25,
alpha level = 0.05;
Sample statistics:
Sample mean = 26.2,
s.d. = 2.32,
n = 17
10. For the following problem, determine whether or not to accept or reject the null hypothesis. Be sure to list the following in this order.
a) Null hypothesis:
b) Alternative hypothesis :
c) Alpha level:
d) Whether or not it is a one tailed or 2 tailed test:
e) Table z value : Z(0.025) =
f) Difference between x1 and x2:
g) Calculated z value:
h) Decision whether to accept or reject H0
Claim: u1 ≠ u2; alpha = 0.05.
Statistics
X1 = 52 X2 = 45
s1 = 2.5 s2 = 5.5
n1 = 70 n2 = 60
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