Answer:
x =
Step-by-step explanation:
Given
- x +
= -
Multiply through by 60 ( the lcm of 4, 5 and 30) to clear the fractions
- 75x + 24 = - 26 ( subtract 24 from both sides )
- 75x = - 50 ( divide both sides by - 75 )
x = =
It took Mariel two hours to complete 13 pages in a workbook she completed 7 1/2 pages in the first hour how many pages does he c
omplete in the second hour
2 answers:
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Answer:
Null hypothesis:
Alternative hypothesis:
And for this case we assume that we have equal variances so that means:
For this case the degrees of freedom are given by:
And replacing we got:
And the best answer would be:
a. 38
Step-by-step explanation:
For this problem we want to test the following:
Null hypothesis:
Alternative hypothesis:
And for this case we assume that we have equal variances so that means:
For this case the degrees of freedom are given by:
And replacing we got:
And the best answer would be:
a. 38