Final Page 2 1 . ( TCO B ) The following table gives the number of visits to recreational facilities by kind and geographical region . ( Points : 30 ) 2 . ( TCO B , F ) The length of time Americans exercise each week is normally distributed with a mean of 15.8 minutes and a standard deviation of 2.2 minutes
X |
P ( X≤x ) |
P ( X≥x ) |
Mean Std dev |
11 |
. 0146 . 9854 15.8 |
2.2 |
15 |
. 3581 . 6419 15.8 |
2.2 |
21 |
. 9910 . 0090 15.8 |
2.2 |
24 |
. 9999 . 0001 15.8 |
2.2 |
p ( lower ) |
p ( upper ) |
Set 2
1 . ( TCO A ) Seventeen salespeople reported the following number of sales calls completed last month .
72 93 82 81 82 97 102 107 119 86 88 91 83 93 73 100 102
a . Compute the mean , median , mode , and standard deviation , Q1 , Q3 , Min , and Max for the above sample data on number of sales calls per month . b . In the context of this situation , interpret the Median , Q1 , and Q3 . ( Points : 33 ) a .
b . Median of the above sales calls means that if all the sales calls data points are arranged in an ascending order , then 91 Nos . of calls made would fall in the middle . So , there are as 8 sales calls
2 . ( TCO B ) Cedar Home Furnishings has collected data on their customers in terms of |
whether they reside in an urban location or a suburban location , as well as rating the |
customers as either “ good ,” “ borderline ,” or “ poor .” The data is below . |
Urban Suburban |
Total |
Good 60 |
168 |
228 |
Borderline |
36 |
72 |
108 |
Poor |
24 |
40 |
64 |
Total |
120 |
280 |
400 |
If you choose a customer at random , then find the probability that the customer