Ross paid $154.48 for 8 DVDs that were all the same price which is the best estimate of the cost of each DVD
1 answer:
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Answer:
Step-by-step explanation:
1) The sample and the population of this study is the friends who replied his email which includes in his contact list. then, the number of the replied to his email are 9 friends.
population: the whole friends include in his contact list.
3) Type I error occurs when one incorrectly rejects the null hypothesis
Here there is possibility of type I error
Answer:
The volume of the figure is: 60840, or approximately about 191037.6 ft^3.
Step-by-step explanation:
This 3D figure can be split into two separate figures, a half-sphere, and a cone.
Let's first try to find the volume of the half-sphere.
The formula for the volume of the half-sphere is , so substituting 39 for r gives us a volume of 39546
ft^3, or about 124174.44 ft^3.
Next, let's find the volume of the cone. We see that the radius of the cone is once again 39 ft, and the height of the cone i s just 81-39, or 42 ft.
The volume of a cone is , and substituting 39 for r and 42 for h, we obtain a result of 21294
, or about 66863.16
Thus, the final volume of the figure is: 60840, or approximately about 191037.6 ft^3