Answer:
The datapoint 9.0 ppm is outlier at the 90% confidence level.
Explanation:
The old data has following values
mean=10.5 mm
standard deviation 0.2 mm
Now the mean of new values is calculated as following

So the value as 9.0 ppm can be considered easily as outlier in this regard.
The last one, handmade gifts require more of the givers time!
Answer:
C) 40,000 Joules
Explanation:
½(1000)10² - 10000 = 40000
160w/4 = 40w
1000J/ 4= 250J
a 40w light bulb will consume 250J
Answer:
a) V = 465.9 m/s
b) θ = 70.529°
Explanation:
Let's first calculate angular velocity of earth:

Velocity of a person on Ecuador will be:


For part b, since angular velocity is the same:

Solving for θ:

