Answer:
The sample must be of at least 48 pizzas.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
How large a sample must she take if she wants the margin of error to be under 0.5 inch?
She needs a sample of at least n, in which is found when
Rounding up
The sample must be of at least 48 pizzas.
Answer: 96 snickers and 108 kitkats
Step-by-step explanation: you should do system of equations and then it would be 48s+36k=204 and 28s+22.5k=123.5, after you do the math, the answer turns out to be 96 snickers and 108 kitkats. :)
54 makes sense because it is less than a 90 degree angle and 80 wouldn't go through.
Answer:
Step-by-step explanation:
Slope intercept form is a way of expressing a line in the format;
Where (m) is the slope of the line, and (b) is the y-intercept. One can solve for (b) by substituting in a point on the line and using inverse operations to solve.
Substitute in point (-6, -1)
Answer:
n = 32 - 14 (= 18)
Step-by-step explanation:
You haven't given the answer options, however I assume it will be written in this form. I.e. the number of cupcakes still needed is just the total number of students (32) minus the number that Jenna bought (14).
so n = 32 -14 (=18)