Both methods assume a normal distribution of the data, but the z-tests are most useful when the standard deviation is known.
OR u can use , z-tests are used when we have large sample sizes (n > 30), whereas t-tests are most helpful with a smaller sample size (n < 30). Both methods assume a normal distribution of the data, but the z-tests are most useful when the standard deviation is known.
Answer:
1/2
Step-by-step explanation:
Probably of selecting a boy:
20/30 = 2/3
and brought 10 up to 20:
45/60 = 3/4
so Probably of selecting a boy and brought 10 up to 20:
2/3 x 3/4 = 2/4 = 1/2
Volume of the sphere = 4/3πr³
Volume of the sphere = 4/3 (π) (3)³
Volume of the sphere = 36π
Volume of the sphere = Volume of the cone
36π = 1/3π(3)²h
36π = 3πh
h = 36π ÷ 3π
h = 12
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Answer: The height is 12 inches.
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Answer:9 1/2 and 5 1/2
I hope that’s what your looking for
Answer: -48m + 56
Step-by-step explanation:
-8x 6m= -48m
-8x-7= 56
