Answer:
C. Two-tailed paired t-test.
Step-by-step explanation:
Since Dr. Hernandez takes 30 samples from a contaminated lake and 30 fish from a pristine lake, he should use a two-tailed t-test.
Paired t-tests describe tests used to compare the means of two samples when each observation in one sample can be paired with an observation in the other sample. Dr. Hernandez can certainly pair the samples and observe the differences, so the answer is C. Two-tailed paired t-test.
Hope this helps!
Answer: The mechanic worked 3hrs 95 minutes
Step-by-step explanation:
2 2/3 + 1 2/9 = 3.7 9 - 3.7 = 5.3 so the answer would be 5.3 pounds of fertilizer left. Hope this helps!
Answer:
1/4 pls mark brainliest
Step-by-step explanation:
Let bitstrings have a maximum length of L bits.
and f(x)=number of one-bits less number of zero-bits.
x=length of bitstring in bits.
Case 1: x=L, all L bits are ones
Then f(x)=L
Case 2: x=L, all L bits are zeroes
Then f(x)=-L
Then
dom f(x)=[0,L]
range f(x) = [-L,L]