1) factor to see if you can get anything to cancel out before you multiply
2) the rest of my work is shown in the picture attached
3) the answer is n^2
2) the rest of my work is shown in the picture attached
3) the answer is n^2
Combine the like terms to create an equivalent expression:-3z- z
1 answer:
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Answer: 0.0170
Step-by-step explanation:
Given : The mean amount purchased by a typical customer at Churchill’s Grocery Store is $23.50, with a standard deviation of $5.00.
i.e.
We assume the distribution of amounts purchased follows the normal distribution.
Sample size : n=50
Let be the sample mean.
Formula :
Then, the probability that the sample mean is at least $25.00 will be :-
Hence, the likelihood the sample mean is at least $25.00= 0.0170
Answer:
Step-by-step explanation:
First, we expand the equation using the distributive rule:
Hence,
Simplify:
Add like terms:
Subtract 13 from both sides:
Divide both sides by -8: