Answer:
Step-by-step explanation:
Given that population average is 0.8 ampere
Sample size = 9
Sample mean x bar = 1.34 A
Sample std dev s = 0.48
(one tailed test)
Mean difference -
Std error =
t test can be used since sigma is not known and sample size small
t statistic = mean diff/std error = 3.5
df = 8
p value = 0.00404
Answer:
120cm *squared*
Step-by-step explanation:
A = π r² to find a circle
half of diameter is radius so 12/2 = 6
3 x 6 (squared) = 108
we found the half circle then add 12
so we make a semi circle
108 + 12= 120
answer 120 cm *squared*
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Answer:
48p^2 +4p-4
Step-by-step explanation:
Use Foil Method
First: 8p*6p=48p^2
Outsides: 8p*2=16p
Insides: -2*6p=-12p
Lasts: -2* 2=-4
simplify:
48p^2 +16p - 12p -4
ANSWER 48p^2 +4p-4
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