Answer:
...
Step-by-step explanation:
SohCahToa
Sin: Opposite Over Hypotenuse
Cos: Adjacent Over Hypotenuse
Tan: Opposite Over Adjacent
68 Degrees is the angle we’re looking at.
X is Adjacent to the 68 degree angle, and 20 is the Hypotenuse.
Therefore, the answer is B. Cos
The mass of the moon rock in grams would be 0.35
The confidence interval for mean is
.
Here .
Use standard normal distribution table.
The z value to be used is such that
z=-1.96
The z value to be used is 1.96.