Answer:
It is 80% statistically safe to conclude that the population standard deviation is less than 1.8°F
Step-by-step explanation:
The given information are;
The sample size, n = 102
The sample mean = 98.4°F
The sample standard deviation = 0.66°F
α = 0.2, ∴ α/2 = 0.1
= = 83.267
= = 119.589,
Which gives;
0.607 < σ <0.727
Therefore, it is 80% statistically safe to conclude that the population standard deviation is less than 1.8°F.
<h3>Answer: 36,400 dollars</h3>
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Work Shown:
Triple each deposit amount as you go from month to month.
100 deposited in January
300 deposited in February
900 deposited in March
2700 deposited in April
8100 deposted in May
24300 deposited in June
Add up those amounts: 100+300+900+2700+8100+24300 = 36,400
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A shortcut is to use the following formula
S = a*(1-r^n)/(1-r)
where
S = sum of the first n terms of a geometric sequence
a = first term = 100 which is the amount deposited in Jan.
r = common ratio = 3 is the idea we triple each deposit
n = number of terms = 6 is the number of months from Jan to June
So we get,
S = a*(1-r^n)/(1-r)
S = 100*(1-3^6)/(1-3)
S = 36,400
which is the same answer as before. This method is much faster if n is large.
Answer:
is NOT the same for all ordered pairs
The graph does NOT go through the point (0,0
Step-by-step explanation:
TRUST me
Answer:
8 m
Step-by-step explanation:
1) Make sure that they both have the same unit which in this case I'll change Km to m.
3.2 Km x 1000 = 3200 m
2) In order to find how much laps of 400m the athlete can cover you need to understand that one lap is 400 m, thus to find how many laps you have to divide 3200 m by 400 m
3200 m / 400 m = 8 m
Answer:
39/44 is your answer
Step-by-step explanation:
Here is what you do.
<em>3/11 x 3 1/4 = 39/44</em>
39/44 is your answer