X=4 for x^2 - 3x - 10 is the value of x a solution to the given inequality?
1 answer:
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Answer:
a)
b)
Step-by-step explanation:
We have to build appropriate null and alternate hypothesis for the given scenarios.
a) Population mean, μ = $62,500 per year
The market research wants to find whether the mean household income of mall shoppers is higher than that of the general population.
We would use one-tail(right) test to perform this hypothesis.
b) Population mean, μ = 2.6 hours
The company want to know the average time to respond to trouble calls is different or not.
We would use two-tail test to perform this hypothesis.
Answer:
It's irrational
Step-by-step explanation:
the square root of 27 is equal to:
We know that is an irrational number (but a real number), so
is the same.
In case we need to prove that is irrational, please leave a comment.