Dairy Castle wanted to boost the sales of their "Country Baskets." They thought that it might be helpful to hang posters that picture the item. They recorded the number of Country Baskets sold during lunchtime for one week at their various stores. They repeated the sampling for another week when the poster advertising was used. Assume that the weekly sales are normally distributed. Is there sufficient evidence to say that hanging the posters improved the sales of the Country Baskets? Use a .05 significance level. Store Before After Store Before After1218 215 240 1270 201 2201224 180 220 1282 207 2151236 150 190 1292 195 2191252 180 175 1304 180 195

see below

step-by-step explanation:

7.   there are 10 data points in the set.   the middle point is between 5 and 6.   the middle point in the top half is 8   and the middle point in the bottom half is 3. to find the iqr , take point 8 and subtract point 3

mid term   point 8 = 100   point 3 = 88

iqr = 100-88 = 12

final   point 8 = 93   point 3 = 78

iqr = 93 - 78 = 15

the final has the greatest iqr

6.   b - there is a high data value that causes the data set to be asymmetrical for the males: the data for males are high and asymmetrical .   there is an outlier for the males that skews the data

5.   the   iqr is a better measure of spread for the movies and basketball games.   since the basketball game has an outlier, we do not want to use standard deviation for measurement.  

3.   the exam median is much higher than the class median.   the median line is farther to the right on the exams

2.   there is no way to tell what the means are from the box and whisker plots.  

sine

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation: