Seat Standard Round
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 ZEBRA PRINT STANDARD ROUND SOFT PADDED TOILET SEAT BLACK AND WHITE $11.99 End Date: Thursday May-31-2012 2:47:41 PDT Buy It Now for only: $11.99 |
 Ginsey Soft Toilet Seat Sun Moon Stars Standard Round $31.50 End Date: Wednesday May-23-2012 16:03:12 PDT |
 LEOPARD PRINT STANDARD SIZE ROUND SOFT PADDED TOILET SEAT CHEETAH $11.99 End Date: Thursday Jun-21-2012 14:45:07 PDT Buy It Now for only: $11.99 |
 Toilet Seat Blue Hard Resin Air Bubbles by Ginsey Standard Round Size Opaque $44.95 End Date: Thursday Jun-21-2012 14:52:19 PDT Buy It Now for only: $44.95 |
 RESIN CAPICE SHELL TOILET SEAT MOTHER OF PEARL LOOK STANDARD ROUND $46.99 End Date: Friday May-25-2012 16:02:01 PDT Buy It Now for only: $46.99 |
 SOLID SAGE GREEN HARD WOOD STANDARD ROUND TOILET SEAT $13.99 End Date: Thursday May-31-2012 2:46:44 PDT Buy It Now for only: $13.99 |
 GINSEY CLASSIQUE SOFT TOILET SEAT STANDARD ROUND LILAC $11.99 End Date: Saturday Jun-9-2012 6:17:17 PDT Buy It Now for only: $11.99 |
 STANDARD ROUND CUSHION SOFT PADDED TOILET SEAT MATCHING COLORED HINGES MAROON $10.98 End Date: Tuesday Jun-5-2012 9:07:13 PDT Buy It Now for only: $10.98 |
 SEA ISLE SEA SHELL STANDARD ROUND TOILET SEAT SEASHELLS $49.99 End Date: Saturday Jun-9-2012 9:19:02 PDT Buy It Now for only: $49.99 |
 Ginsey Soft Toilet Seat Sun Moon Stars Standard Round $24.50 End Date: Wednesday May-23-2012 16:04:20 PDT Buy It Now for only: $24.50 |
 GINSEY CLASSIQUE SOFT TOILET SEAT STANDARD ROUND BLACK $11.99 End Date: Wednesday May-30-2012 16:55:49 PDT Buy It Now for only: $11.99 |
 SOLID BLACK HARD WOOD STANDARD ROUND TOILET SEAT $13.99 End Date: Sunday Jun-17-2012 16:50:34 PDT Buy It Now for only: $13.99 |
 HARD WOOD STANDARD ROUND TOILET SEAT BROWN $13.99 End Date: Monday Jun-18-2012 17:45:07 PDT Buy It Now for only: $13.99 |
 EB 1500W Non electric KOREA BIDET Toilet Seat attach Washlet Sprayer Shattaf $58.95 End Date: Wednesday Jun-20-2012 22:50:51 PDT Buy It Now for only: $58.95 |
 Mainstays Home SOFT TOILET SEAT Standard Lilac NEW $18.99 End Date: Wednesday Jun-20-2012 20:17:21 PDT Buy It Now for only: $18.99 |
 Comfort Seats C1B3R7S 00 EZ Close Standard Round Toilet Seat White $29.99 End Date: Friday Jun-22-2012 10:48:31 PDT Buy It Now for only: $29.99 |
 STANDARD ROUND SOFT PADDED TOILET SEAT ZEBRA PRINT $14.88 End Date: Friday Jun-15-2012 7:18:26 PDT Buy It Now for only: $14.88 |
 Soft Padded Toilet Seat Corinthian White Marble Standard Round USA Made Ginsey $24.50 End Date: Tuesday Jun-5-2012 18:12:58 PDT Buy It Now for only: $24.50 |
 Ginsey Mosaic Soft Toilet Seat Standard Round NEW $31.00 End Date: Wednesday May-23-2012 15:50:23 PDT |
 STANDARD ROUND SOFT PADDED TOILET SEAT LEOPARD PRINT $11.99 End Date: Wednesday May-30-2012 22:56:40 PDT Buy It Now for only: $11.99 |
 Soft Toilet Seat Inspirational Theme Cushioned Standard Round Made in USA Ginsey $24.50 End Date: Thursday Jun-7-2012 17:16:44 PDT Buy It Now for only: $24.50 |
 Ginsey Slow Close Solid Toilet Seat Standard Round $34.50 End Date: Saturday Jun-16-2012 6:41:28 PDT Buy It Now for only: $34.50 |
 SOLID LILAC PINK HARD WOOD STANDARD ROUND TOILET SEAT $13.99 End Date: Sunday Jun-17-2012 16:58:22 PDT Buy It Now for only: $13.99 |
 LEOPARD PRINT STANDARD ROUND SOFT PADDED TOILET SEAT CHEETAH $11.99 End Date: Sunday Jun-17-2012 12:03:51 PDT Buy It Now for only: $11.99 |
 GINSEY CLASSIQUE SOFT TOILET SEAT STANDARD ROUND WHITE $11.99 End Date: Monday Jun-18-2012 9:20:04 PDT Buy It Now for only: $11.99 |
 ROSE PINK HARD WOOD STANDARD ROUND TOILET SEAT $13.99 End Date: Sunday Jun-17-2012 16:44:15 PDT Buy It Now for only: $13.99 |
 HARD WOOD STANDARD ROUND TOILET SEAT ROSE PINK $13.99 End Date: Friday May-25-2012 17:50:17 PDT Buy It Now for only: $13.99 |
 STANDARD ROUND SOFT PADDED TOILET SEAT WOOD GRAIN PRINT $11.99 End Date: Wednesday May-30-2012 22:59:04 PDT Buy It Now for only: $11.99 |
 OFF WHITE MARBLEIZED LOOK MOLDED WOOD STANDARD ROUND TOILET SEAT $33.12 End Date: Thursday Jun-14-2012 17:39:11 PDT Buy It Now for only: $33.12 |
 Ginsey Soft Toilet Seat Bear Design Standard Round $24.50 End Date: Monday Jun-4-2012 15:23:55 PDT Buy It Now for only: $24.50 |
 STANDARD ROUND PENNIES PENNY COINS RESIN TOILET SEAT $219.99 End Date: Wednesday May-23-2012 19:26:00 PDT Buy It Now for only: $219.99 |
 HARD WOOD STANDARD ROUND TOILET SEAT BURGUNDY $13.99 End Date: Monday Jun-18-2012 17:47:52 PDT Buy It Now for only: $13.99 |
 GINSEY CLASSIQUE SOFT TOILET SEAT STANDARD ROUND NAVY $11.99 End Date: Thursday May-24-2012 9:30:24 PDT Buy It Now for only: $11.99 |
 HARD WOOD STANDARD ROUND TOILET SEAT BLUE $12.99 End Date: Thursday Jun-7-2012 20:24:46 PDT Buy It Now for only: $12.99 |
 STANDARD SIZE ROUND SILVER FOIL CLEAR RESIN TOILET SEAT $49.99 End Date: Wednesday Jun-6-2012 19:24:29 PDT Buy It Now for only: $49.99 |
 Toilet Seat Blue Hard Resin Air Bubbles by Ginsey Standard Round Size Opaque $44.95 End Date: Tuesday May-29-2012 14:47:19 PDT |
 GINSEY CLASSIQUE SOFT TOILET SEAT STANDARD ROUND YELLOW $11.99 End Date: Saturday Jun-9-2012 12:50:08 PDT Buy It Now for only: $11.99 |
 Rivers Edge Mossy Oak Camoflage Standard Toilet Seat Camo Hunting Hunter Decor $45.95 End Date: Tuesday Jun-12-2012 17:23:35 PDT Buy It Now for only: $45.95 |
 AMERICAN STANDARD Laurel round front seat WHITE $29.80 End Date: Saturday Jun-16-2012 10:19:16 PDT Buy It Now for only: $29.80 |
 Ginsey Soft Toilet Seat PENGUIN Design Standard Round $24.50 End Date: Monday Jun-4-2012 14:56:03 PDT Buy It Now for only: $24.50 |
 Ginsey Soft Toilet Seat Burgundy Standard Round USA NEW $17.95 End Date: Wednesday Jun-6-2012 16:55:43 PDT Buy It Now for only: $17.95 |
 NEW Bath Bliss Beveled Standard 165 Round Wood Toilet Seat White Color NEW $3.99 End Date: Wednesday May-30-2012 22:42:57 PDT Buy It Now for only: $3.99 |
 American Standard 5330010020 Champion SlowClose Round Toilet Seat Cover White $56.25 End Date: Wednesday Jun-20-2012 9:01:49 PDT Buy It Now for only: $56.25 |
 GINSEY CLASSIQUE SOFT TOILET SEAT STANDARD ROUND BLUE $11.99 End Date: Thursday Jun-7-2012 20:15:09 PDT Buy It Now for only: $11.99 |
 Soft Toilet Seat Zebra Pattern Design Standard Round Made in USA by Ginsey $24.50 End Date: Thursday Jun-7-2012 17:29:52 PDT Buy It Now for only: $24.50 |
 Ginsey Mosaic Soft Toilet Seat Standard Round NEW $23.50 End Date: Monday May-28-2012 16:42:33 PDT Buy It Now for only: $23.50 |
 REAL US COINS MONEY LUCITE RESIN TOILET SEAT STANDARD $219.99 End Date: Tuesday Jun-12-2012 18:56:49 PDT Buy It Now for only: $219.99 |
 Ginsey Soft Toilet Seat Ruba Dub Ducks Standard Round $24.50 End Date: Tuesday May-29-2012 9:54:58 PDT Buy It Now for only: $24.50 |
 Ginsey Soft Toilet Seat DESIGNER STRIPES Standard Round blue lime white orange $19.50 End Date: Friday May-25-2012 7:51:02 PDT Buy It Now for only: $19.50 |
 Ginsey Home Solutions Wood Scallop Shell Solid Seat Standard Round Metal Hinges $38.50 End Date: Saturday Jun-16-2012 10:23:11 PDT Buy It Now for only: $38.50 |
 American Standard 5330010020 White Round Front Slow Close Toilet Seat from the $39.65 End Date: Tuesday Jun-5-2012 11:45:05 PDT Buy It Now for only: $39.65 |
 CAROMA Standard Round Front Toilet Seat WHITE $42.59 End Date: Saturday Jun-16-2012 14:44:17 PDT Buy It Now for only: $42.59 |
 Toilet Seat Blue Hard Resin Air Bubbles by Ginsey Standard Round Size Opaque $44.95 End Date: Tuesday May-29-2012 14:47:20 PDT |
 Soft Toilet Seat Moose Nature Theme Cushioned Standard Round Made in USA Ginsey $24.50 End Date: Thursday Jun-7-2012 17:19:31 PDT Buy It Now for only: $24.50 |
 Ginsey Soft Toilet Seat Royal Palm Standard Round USA $21.50 End Date: Wednesday Jun-13-2012 18:17:00 PDT Buy It Now for only: $21.50 |
 Ginsey Soft Toilet Seat Frog Lilypad Design Standard Round Made in the USA $24.50 End Date: Tuesday Jun-12-2012 18:31:43 PDT Buy It Now for only: $24.50 |
 NEW MARBLEIZED MOLDED WOOD STANDARD ROUND TOILET SEAT BLACK MARBLE $35.22 End Date: Friday Jun-15-2012 15:47:26 PDT Buy It Now for only: $35.22 |
 HARD WOOD STANDARD ROUND TOILET SEAT BLACK $13.99 End Date: Sunday May-27-2012 6:21:34 PDT Buy It Now for only: $13.99 |
 Ginsey Soft Toilet Seat Wolves Design Round Standard Made in the USA $24.50 End Date: Monday Jun-11-2012 13:35:12 PDT Buy It Now for only: $24.50 |
 Soft Le Chic Fashion Cushioned Toilet Seat Round Standard Ginsey $24.50 End Date: Tuesday Jun-5-2012 17:55:53 PDT Buy It Now for only: $24.50 |
 BROWN EMBROIDERED TWO FLOWERS STANDARD ROUND CUSHION PADDED SOFT TOILET SEAT $29.57 End Date: Friday Jun-15-2012 15:47:51 PDT Buy It Now for only: $29.57 |
 ROSE PINK EMBROIDERED SEASHELL STANDARD ROUND CUSHION PADDED SOFT TOILET SEAT $29.57 End Date: Thursday Jun-14-2012 17:39:20 PDT Buy It Now for only: $29.57 |
 GINSEY CLASSIQUE SOFT TOILET SEAT STANDARD ROUND ROSE $11.99 End Date: Monday Jun-11-2012 18:23:39 PDT Buy It Now for only: $11.99 |
 Toilet Seat Elevator Carex White Elevated Standard Round Bending Sitting B30700 $26.99 End Date: Wednesday Jun-20-2012 8:53:09 PDT Buy It Now for only: $26.99 |
 GINSEY CLASSIQUE STANDARD ROUND CUSHION SOFT PADDED TOILET SEAT BLUE $33.81 End Date: Friday Jun-15-2012 14:16:35 PDT Buy It Now for only: $33.81 |
 GINSEY CLASSIQUE STANDARD ROUND CUSHION SOFT PADDED TOILET SEAT BURGUNDY $40.16 End Date: Wednesday May-30-2012 13:00:53 PDT Buy It Now for only: $40.16 |
 American Standard 5322011020 Rise Shine Round Toilet Seat with Cover White $34.43 End Date: Saturday Jun-9-2012 12:58:13 PDT Buy It Now for only: $34.43 |
 Soft Toilet Seat Basket Weave Design Standard Round Made in USA by Ginsey $24.50 End Date: Thursday Jun-7-2012 17:45:43 PDT Buy It Now for only: $24.50 |
 HARD WOOD STANDARD ROUND TOILET SEAT BONE BEIGE $12.99 End Date: Saturday Jun-9-2012 6:27:20 PDT Buy It Now for only: $12.99 |
 Toilet Seat Blue Hard Resin Air Bubbles by Ginsey Standard Round Size Opaque $44.95 End Date: Tuesday May-29-2012 14:47:19 PDT |
 Soft Padded Toilet Seat Corinthian Gray Standard Round Made in America by Ginsey $22.50 End Date: Monday Jun-4-2012 14:43:14 PDT Buy It Now for only: $22.50 |
 Ginsey Soft Toilet Seat TEXAS Lonestar Standard Round $22.50 End Date: Saturday Jun-2-2012 15:47:44 PDT Buy It Now for only: $22.50 |
 American Standard EverClean Round Toilet Seat in Black 5282011178 EB $59.99 End Date: Thursday Jun-21-2012 10:51:24 PDT Buy It Now for only: $59.99 |
 American Standard Round Front Toilet Seat with Cover White 5282011020 $34.72 End Date: Thursday Jun-21-2012 11:59:58 PDT Buy It Now for only: $34.72 |
 Ginsey Soft Toilet Seat Mosaic Sea Shell Round Standard Made in the USA $24.50 End Date: Monday Jun-4-2012 15:13:30 PDT Buy It Now for only: $24.50 |
 Ginsey Soft Toilet Seat Rose Garden White Round Standard Made in the USA $24.50 End Date: Tuesday Jun-5-2012 18:31:41 PDT Buy It Now for only: $24.50 |
 The Big John White Standard 800 LB Capacity Toilet Seat $99.99 End Date: Wednesday May-30-2012 10:13:01 PDT Buy It Now for only: $99.99 |
 Ginsey Soft Toilet Seat Rose Garden Black Round Standard Made in the USA $24.50 End Date: Tuesday Jun-5-2012 18:28:21 PDT Buy It Now for only: $24.50 |
 AIRBRUSHED BLUE EYED GREY WOLF TOILET SEAT $85.00 End Date: Thursday Jun-14-2012 20:11:15 PDT Buy It Now for only: $85.00 |
 Comfort Seats EZ Close Standard Plastic Round Toilet Seat Bone C1B3R7S01 $29.74 End Date: Friday Jun-15-2012 16:58:24 PDT Buy It Now for only: $29.74 |
 LIGHT WOOD GRAIN M 72 HARD TOILET SEAT STANDARD ROUND $14.99 End Date: Saturday May-26-2012 9:47:49 PDT Buy It Now for only: $14.99 |
 Big John 6W Standard Plastic Toliet Seat White 800 Pound Weight Capacity $96.59 End Date: Saturday Jun-16-2012 8:13:55 PDT Buy It Now for only: $96.59 |
 American Standard Town Square Round Front Molded Toilet Seat White 5720011020 $31.03 End Date: Friday Jun-22-2012 1:53:22 PDT Buy It Now for only: $31.03 |
 Round Standard Wooden Toilet Seat White $24.95 End Date: Wednesday Jun-6-2012 8:00:20 PDT Buy It Now for only: $24.95 |
 Bemis American Standard Silver toilet seat round 162 $27.99 End Date: Wednesday May-23-2012 17:13:14 PDT Buy It Now for only: $27.99 |
Points for Statistics help?
A study was conducted to estimate hospital costs for accident victims who wore seat belts. Twenty
randomly selected cases have a distribution that appears to be bell-shaped with a sample mean of $9,004
and a sample standard deviation of $5,629. Construct a 95% confidence interval for the mean of all such
costs. Round the confidence interval limits to three significant digits.
i need to know how to do the problem not just the answer 
n = 20
x = 9,004 $
s = 5,629 $
α =0.05
CI ?
When population SD (σ) is unknown:
CI = x ± t*s/√n where t is with (n-1) df at a certain confidence level
n-1 = 19
t(19 df, 0.05) = 2.093
http://www.tutor-homework.com/statistics_tables/statistics_tables.html
CI = 9004 ± 2.093 * 5629 / √20 = 9004 ± 2,634 = 6370 to 11638 = 6,370 to 11,600
