Pretzels: In order to judge the effectiveness of an advertising campaign for a certain brand of pretzel, a company obtained a simple random sample of 92 convenience store receipts the week before the ad campaign began, and found that 27 of them showed a purchase of the pretzels. Another simple random
sample of 72 receipts was taken the week after the ad campaign, and 41 of them showed a pretzel purchase.
Part: 0/2
Part 1 of 2
(a) Construct a 90% confidence interval for the difference between the proportions of customers purchasing pretzels before and after the ad campaign.
Let P, denote the proportion of customers purchasing pretzels before the ad campaign and let P, denote the proportion of customers purchasing pretzels
after the ad campaign. Use the TI-84 Plus calculator and round the answers to three decimal places.
A 90% confidence interval for the difference between the proportion of customers purchasing pretzels before and after the
ad campalgn is X

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

have a nice day!

for this case we have that by definition, the surface area of a cylinder is given by:

where:

r: it is the radius of the cylinder

h: it is the height of the cylinder

we can also rewrite it as:

where:

la: it's the lateral area

ba: area of the base

option a

one way is to plot 2 points and connect them which is what the answer choices seem to be doing

it seems to be using the y intercept and the slope

y=mx+b, m=slope, b=y-intercept (where the line hits the y axis)

slope=rise/run

y-intercept is where the line croses the y axis which is the y value where x=0

you seem to have given the wrong slope (you didn't put a number in front of te x, it should be 2/3 or 3/2 looking at the answer options)

y=? x-1

m=? because of your fault

b=-1

so it has a slope of ? and y intercept of -1, meaning it pases through (0,-1)

so draw point (0,-1) (so answer is one of the first 2 option)

if slope is 2/3, then go up 2 and right 3 then draw line through those 2 points

if slope is 3/2, then go up 3 and right 2 then draw line through those 2 points