Reference no: EM133183027

Sales comparison between two stores You need to analyze the daily sales figures for two convenience stores from last month to determine which one is doing better so that you can then budget for your local advertising expenses accordingly. The data from the two stores are given below. You also know that there was a fire near Store 1 that may have adversely affected the sales, whereas there were two days of demonstrations Store 2 against the Russian invasion of Ukraine, which may have helped the sales. 

Store 1	Store 2
$9,337	$12,383
$10,244	$12,068
$10,326	$10,886
$10,550	$11,322
$11,772	$12,066
$11,821	$12,240
$12,154	$12,788
$12,478	$11,690
$11,011	$10,894
$11,563	$12,673
$11,349	$12,668
$12,354	$12,248
$10,926	$10,728
$12,366	$12,595
$11,393	$11,826
$12,393	$11,278
$12,381	$12,128
$12,420	$11,970
$12,115	$11,840
$11,987	$12,939
$11,771	$12,094
$12,655	$10,721
$11,773	$11,569
$11,484	$12,434
$12,927	$11,891
$12,194	$11,585
$12,468	$11,614
$11,519	$12,052
$12,428	$13,451
$10,244	$13,997

1. Characterize the sales numbers for each store using descriptive statistics or histogram and compare the results between the two stores.

2. Do data come from a normal distribution? Are there any outliers? 

3. What are the confidence limits for average sales for both stores? 

4. Are the average sales and scatter in sales the same between the two stores?