Complete Question
The complete question is shown on the first uploaded image
Answer:
The null hypothesis is 
The alternative hypothesis is 
Step-by-step explanation:
From the question we are told that
The number observations is 
The annual salary (in dollars) is y
The mean score on teaching evaluation is x
The the relationship between the y and x is
Where 
is the mean of the equation so
The null hypothesis is
The alternative hypothesis is
1. incorrect
2. correct
3. incorrect (?)
Electromagnets are devices that create a magnetic field through the application of electricity. Strong electromagnets are used to lift, move and drop heavy objects, such as vehicles. Electromagnets have advantages over permanent magnets. When the current is switched off, the electromagnet will lose its magnetism. The car will fall back to earth and we need that when we move cars in a junkyard. With a regular ( permanent ) magnet it would be much harder to do.
Answer: A. True
Answer:
16
Step-by-step explanation:
9 divided by 144 gives you 16
Answer:
Step-by-step explanation:
8r - 6r + 7 - 5
2r + 2
