Do consumers spend more on a trip to store a or store b? suppose researchers interested in this question collected a systematic sample for 85 store a customers and 82 store b customers by asking customers for their purchase amount as they left the store. using the given summary statistics, researchers calculated a 95% confidence interval for the mean difference between store a and store b purchase amounts. the interval was ($negative 15.96,$negative 4.04). explain in context what this interval means.

We can be 95% confident that consumers spend between $4.04 and $15.96 less at Store A than the consumers spend at Store B.

Step-by-step explanation:

Confidence Intervals give an estimate as range of values for a statistic concerned at a confidence level.

In this case the statistic is the mean difference between Store A and Store B purchase amounts and the confidence level is 95%.

Confidence Interval can be calculated using M±ME where

step-by-step explanation:

i could only see the first page. the other pages were blurry. ; -;

x hot dogs for 2$, y drinks for 3$. 29 items and total 70

2x+3y=70

x+y=29

if x=17and y=12

2(17)+3(12)=70

34+36=70