Roper Checkbook
by admin on Apr.15, 2009, under Leather Credit Card Holder
 |
 | TonyLama Leather Rodeo/Roper WALLET Checkbook/BULLRIDER |  |  | US $35.00 | 7d 2h 39m |
 | Nocona Leather ~ TEXAS Roper Rodeo WALLET ~ Checkbook Bills Credit Cards Photos | | | US $24.00 | 11d 22h 31m |
 | Leather/Concho~Rodeo/Roper WALLET~Checkbook/Credit Card | | | US $19.99 | 13d 22h 28m |
 | Tony Lama BULL RIDER Roper Wallet billbold Checkbook Cover | | | US $41.00 | 19d 22h 46m |
 | ENMON Small Buck Deer logo Leather Roper Billfold Wallet Checkbook | | | US $41.00 | 2d 2h 25m |
 | Mossy Oak Shoot Gun Shell logo Leather Roper Billfold Wallet Checkbook | | | US $41.00 | 2d 1h 52m |
 | Distressed Bomber Jacket Roper Genuine Leather Wallet Checkbook | | | US $24.99 | 16d 18h 3m |
| Powered by phpBay Pro |
|
No items matching your keywords were found.
Roper Checkbook
another stat question... ?
Roper ASW conducted a survey to learn about American adults' attitudes twoard money and happiness. 56% of the respondents said they balance their checkbook at least once a month. Suppose a sample of 400 American adults were selected.
What is the probability that the sample proportion will be within ±.02 if the population proportion?
Let p be the population proportion of the respondents said they balance their checkbook at least once a month.
Since n*p= 400*56%=224 and n*(1-^p)=400*(1-56%)=176 are both at least greater than 5, then n is considered to be large and so the sampling distribution of sample proportion-^p will follow the z standard normal distribution. This sampling distribution will have the mean of the sample proportions = U^p = p = 56% = 0.56 and the standard deviation of the sample proportions = δ^p = √[p(1-p)/n] =
√[0.56*(1-0.56)/400] = √0.000616
The lower limit of the sample proportion which is less than or equal to 0.02 from the population proportion
= 0.56-0.02
= 0.54
The upper limit of the sample proportion which is less than or equal to 0.02 from the population proportion
= 0.56+0.02
= 0.58
So,
P(0.54<^p<0.58)
= P{[(0.54-0.56)/√0.000616]<[(^p-p)/δ^p]<
{[(0.58-0.56)/√0.000616]}
= P(-0.81
= 0.582
So, there is a 0.582 probability that the sample proportion will be within ±.02 of the population proportion.
Hope this helps.
|
| TonyLama Leather Rodeo/Roper WALLET Checkbook/BULLRIDER | | | US $35.00 | 7d 2h 39m |
| Nocona Leather ~ TEXAS Roper Rodeo WALLET ~ Checkbook Bills Credit Cards Photos | | | US $24.00 | 11d 22h 31m |
| Leather/Concho~Rodeo/Roper WALLET~Checkbook/Credit Card | | | US $19.99 | 13d 22h 28m |
| Tony Lama BULL RIDER Roper Wallet billbold Checkbook Cover | | | US $41.00 | 19d 22h 46m |
| ENMON Small Buck Deer logo Leather Roper Billfold Wallet Checkbook | | | US $41.00 | 2d 2h 25m |
| Mossy Oak Shoot Gun Shell logo Leather Roper Billfold Wallet Checkbook | | | US $41.00 | 2d 1h 52m |
| Distressed Bomber Jacket Roper Genuine Leather Wallet Checkbook | | | US $24.99 | 16d 18h 3m |
| Powered by phpBay Pro |
|
No items matching your keywords were found.
| | Calf Roper $14.99 Calf Roper - Premium Poster |
| | Trick Roper $14.99 Trick Roper - Premium Poster |
| | Margaret Roper $49.99 Margaret Roper - Giclee Print |
| | Cowgirl Roper $44.99 Cowgirl Roper - Giclee Print |
| | MY CHECKBOOK FACTORY X1 $79.99 MY CHECKBOOK FACTORY X1 |
| | New York Mets Checkbook $21.45 New York Mets Checkbook New York Mets Leather and Nylon Checkbook |
| | Oakland Athletics Checkbook $21.45 Oakland Athletics Checkbook Oakland A\'s Leather and Nylon Checkbook |
| | Colorado Rockies Checkbook $21.45 Colorado Rockies Checkbook Colorado Rockies Leather and Nylon Checkbook |
| | Detroit Tigers Checkbook $21.45 Detroit Tigers Checkbook Detroit Tigers Leather and Nylon Checkbook |
| | Atlanta Braves Checkbook $21.45 Atlanta Braves Checkbook Atlanta Braves Leather and Nylon Checkbook |
| | Boston Red Sox Checkbook $21.45 Boston Red Sox Checkbook Boston Red Sox Leather and Nylon Checkbook |
| | Seattle Mariners Checkbook $21.45 Seattle Mariners Checkbook Seattle Mariners Leather and Nylon Checkbook |
| | Hawaii Checkbook Cover in a tin $21.95 Hawaii Checkbook Cover in a tin Hawaii Checkbook Cover in a tin |
| | Leather Roper Stirrups Russet $42.99 Leather Roper Stirrups Deep roper stirrups with lacing and a 3" neck. |
| | Cowboy Calf Roper $44.99 Cowboy Calf Roper - Giclee Print |
| | Trick Roper Cowgirl $14.99 Trick Roper Cowgirl - Premium Poster |
| Account limit of 2104 requests per hour exceeded. |
