Answer:
Step-by-step explanation:
Let x be the wait times before a call is answered in phone calls.
The claim is x bar <3.3 minutes
Sample size n =62
Sample mean - x bar = 3.24 minutes
Population std dev =
Since population std dev is known and also sample size is sufficiently large, we can use Z test.
(one tailed test)
Mean difference = 3.24-3.3 = -0.06 min
Std error of sample =
Z = tset statistic = 
p value = 0.119
Since p value > alpha, we accept null hypothesis.
There is no evidence to support the claim at alpha = 0.08
Answer: Choice B) SAS
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Explanation:
The sides that have the double tickmarks are the same length. This forms one "S" of "SAS".
The square angles are 90 degree angles, or right angles. They are congruent. This forms the "A" of "SAS".
The overlapping sides are the same length, which forms the second "S" of "SAS".
The angle is between the two sides allowing us to use SAS. The order is important.
Answer:
B
Step-by-step explanation:
given
A = 
(
+ 
)h
multiply both sides by 2 to eliminate the fraction
2A = ( + )h
divide both sides by the multiplier h
= +
Subtract from both sides
- = , that is
= -
Surface area is area so it's in^2 or inches squared
12 in=1 foot therfor
1in<1 foot
so therfor if we converted the surface area to feet, then the number would decrease, but the actual area would stay the same because we just converted the units, we didn't change the actuall area
therfor the answers are A and E
Answer: -1/6
Step-by-step explanation:
