Shawn and Ellie are construction workers. Shawn can complete a concrete job in 4 hours, while Ellie can complete it in 6 hours.
1 answer:
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Answer:
4.5
Step-by-step explanation:
To find the instantaneous rate of chance, take the derivative:
Remember to use power rule:
To differentiate -2/x, think of it as:
Then, substitute 2 for x:
Answer:
There is statistical evidence at 95% level to claim that students attend more than 2 classes per quarter
Step-by-step explanation:
Given that one instructor believes that students take more than 2 classes per quarter on average. Let X be the no of classes students take.
(Right tailed test at 5% significance level)
Mean difference =
Std error =
Test statistic t = mean diff/std error = 1.84
p value =0.039
Since p <0.05, we reject null hypothesis.
There is statistical evidence at 95% level to claim that students attend more than 2 classes per quarter