Anna earns 50 points every time she shops at a grocery store. She needs a total of 3,470 points to receive a free prize. So far
2 answers:
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Answer: 12
Step-by-step explanation:
The formula to find the sample size is given by:-
, where
is the population standard deviation,
is the z-value for the
confidence interval and E is the margin of error .
As per given , we have
Population standard deviation :
z-value for 95% confidence interval :
Margin of error : E= 3
Then, the required minimum sample :-
Hence, the required minimum sample size = 12
Answer:
-23,
Step-by-step explanation:
We need slope intercept form but do not have the needed information. We will gather this information by using point slope form. The point-slope formula is where we substitute a point (x,y) for
.
We have slope represented as m=6 and (3, -5). We input m and .
We now simplify the parenthesis and solve for y to have slope intercept form.
The y-intercept is b of slope intercept form y=mx+b. Here b=-23.