13) zy + 4y; use y=5, and z=2
2 answers:
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Let Issac work for x hours, and Ruby works 8 hours more than of Issac, so Ruby work for hours.
And Svetlana worked four times of Ruby, therefore Svetlana worked for
And total hours they worked together is 136. That is
So Issac worked for 16 hours, Ruby worked for 24 hours and Svetlana worked for 24 times 4 equals 96 hours .
Answer:
A) 1.96%
Step-by-step explanation:
You need to know the band between 5.48 g and 5.82 g, the mean is 5.67 g and the standard deviation is .0.070 g, with that information you can calculate the percentage to the left of the mean and the percentage to the right of the mean and add them.
To know its percentage you have to calculate the z score for both values.
x is the value being evaluated
μ is the mean
σ is the standard deviation
For 5.48 g:
and is equivalent to 0.0034
For 5.82 g:
and is equivalent to 0.9838
Those numbers mean that the percentage below 5.48 is equivalent to the 0.34% of the values and the percentage below 5.82 is equivalent to 98.38% of the values. Then the percentage rejected is the percentage above 5.82, 100 - 98.38 = 1.62% plus the percentage below 5.48, 0.34%.
Percentage rejected = 1.62% + 0.34% = 1.96%