9.2.3

All Fresh Seafood is a

wholesale fish company based on the east coast of the U.S.Catalina

Offshore Products is a wholesale fish company based on the west coast of the

U.S.Table #9.2.5 contains prices from both companies for specific fish

types ("Seafood online," 2013) ("Buy sushi grade,"

2013).Do the data provide enough evidence to show that a west coast fish

wholesaler is more expensive than an east coast wholesaler?Test at the 5%

level.

Table

#9.2.5: Wholesale Prices of Fish in Dollars

Fish | All Fresh Seafood

Prices | Catalina Offshore Products Prices

Cod | 19.99 | 17.99

Tilapi | 6.00 | 13.99

Farmed Salmon | 19.99 | 22.99

Organic Salmon | 24.99 | 24.99

Grouper Fillet | 29.99 | 19.99

Tuna | 28.99 | 31.99

Swordfish | 23.99 | 23.99

Sea Bass | 32.99 | 23.99

Striped Bass | 29.99 | 14.99

9.2.6

The British Department of

Transportation studied to see if people avoid driving on Friday the 13^th.They did a traffic count on a Friday and then again

on a Friday the 13^th at

the same two locations ("Friday the 13th," 2013).The data for

each location on the two different dates is in table #9.2.6.Estimate the

mean difference in traffic count between the 6^th and

the 13^th

using a 90% level.

Table

#9.2.6: Traffic Count

Dates | 6th | 13th

1990, July | 139246 | 138548

1990, July | 134012 | 132908

1991, September | 137055 | 136018

1991, September | 133732 | 131843

1991, December | 123552 | 121641

1991, December | 121139 | 118723

1992, March | 128293 | 125532

1992, March | 124631 | 120249

1992, November | 124609 | 122770

1992, November | 117584 | 117263

9.3.1

The income of males in each

state of the United States, including the District of Columbia and Puerto Rico,

are given in table #9.3.3, and the income of females is given in table #9.3.4

("Median income of," 2013).Is there enough evidence to show

that the mean income of males is more than of females?Test at the 1%

level.

Table

#9.3.3: Data of Income for Males

22529, 37488, 40202, 40285,

40951, 41037, 41309, 41420, 41464, 41528,

41612, 41635, 41803, 41950,

42125, 42182, 42544, 42951, 43146, 43160,

43624, 43902, 43944, 43993,

44057, 44660, 45183, 45494, 45976, 46176,

46214, 46313, 47573, 47956,

48842, 49281, 50053, 50388, 50411, 50580,

50746, 50987, 51630, 52379,

52805, 53033, 53046, 56708, 60264, 60568,

60705, 66760

Table

#9.3.4: Data of Income for Females

22117, 29548, 29688, 30752,

31067, 31238, 31274, 31329, 31330,

31844, 31862, 32316, 32462,

32684, 32843, 33184, 33269, 33424,

33459, 33745, 33823, 33865,

34023, 34381, 34599, 35301, 35438,

35484, 35746, 35890, 36027,

36048, 36931, 37089, 37242, 38177,

39150, 40236, 40416, 40500,

40550, 40969, 40993, 41021, 41412,

41817, 42113, 46185, 47155,

47476, 48748, 60332

9.3.3

A study was conducted that measured the total brain volume (TBV) (in ) of patients that had schizophrenia and patients that are considered normal.Table #9.3.5 contains the TBV of the normal patients and table #9.3.6 contains the TBV of schizophrenia patients ("SOCR data oct2009," 2013).Is there enough evidence to show that the patients with schizophrenia have less TBV on average than a patient that is considered normal?Test at the 10% level.

Table #9.3.5: Total Brain Volume (in ) of Normal Patients

1663407, 1583940, 1299470, 1535137, 1431890, 1578698

1453510, 1650348, 1288971, 1366346, 1326402, 1503005

1474790, 1317156, 1441045, 1463498, 1650207, 1523045

1441636, 1432033, 1420416, 1480171, 1360810, 1410213

1574808, 1502702, 1203344, 1319737, 1688990, 1292641

1512571, 1635918

Table #9.3.6: Total Brain Volume (in ) of Schizophrenia Patients

1331777, 1487886, 1066075, 1297327, 1499983, 1861991

1368378, 1476891, 1443775, 1337827, 1658258, 1588132

1690182, 1569413, 1177002, 1387893, 1483763, 1688950

1563593, 1317885, 1420249, 1363859, 1238979, 1286638

1325525, 1588573, 1476254, 1648209, 1354054, 1354649

1636119

Please explain the steps you took to reach your conclusion. For better table representation, see the

attachment

9.2.3 All Fresh Seafood is a wholesale fish company based on the east coast of the U.S. Catalina Offshore Products is a wholesale fish company based on the west coast of the U.S. Table #9.2.5 contains prices from both companies for specific fish types ("Seafood online," 2013) ("Buy sushi grade," 2013). Do the data provide enough evidence to show that a west coast fish wholesaler is more expensive than an east coast wholesaler? Test at the 5% level. Table #9.2.5: Wholesale Prices of Fish in Dollars Fish Cod Tilapi Farmed Salmon Organic Salmon Grouper Fillet Tuna Swordfish Sea Bass Striped Bass All Fresh Seafood Prices 19.99 6.00 19.99 24.99 29.99 28.99 23.99 32.99 29.99 Catalina Offshore Products Prices 17.99 13.99 22.99 24.99 19.99 31.99 23.99 23.99 14.99 9.2.6 The British Department of Transportation studied to see if people avoid driving on Friday the 13 th. They did a traffic count on a Friday and then again on a Friday the 13 th at the same two locations ("Friday the 13th," 2013). The data for each location on the two different dates is in table #9.2.6. Estimate the mean difference in traffic count between the 6th and the 13th using a 90% level. Table #9.2.6: Traffic Count Dates 1990, July 1990, July 1991, September 1991, September 1991, December 1991, December 1992, March 1992, March 1992, November 1992, November 6th 139246 134012 137055 133732 123552 121139 128293 124631 124609 117584 13th 138548 132908 136018 131843 121641 118723 125532 120249 122770 117263 9.3.1 The income of males in each state of the United States, including the District of Columbia and Puerto Rico, are given in table #9.3.3, and the income of females is given in table #9.3.4 ("Median income of," 2013). Is there enough evidence to show that the mean income of males is more than of females? Test at the 1% level. Table #9.3.3: Data of Income for Males $42,951 $50,411 $45,183 $60,264 $41,803 $46,176 $40,285 $42,125 $52,379 $66,760 $43,624 $50,053 $53,033 $41,420 $41,309 $46,214 $42,544 $40,951 $43,993 $50,580 $60,568 $45,976 $43,160 $51,630 $37,488 $43,902 $41,612 $40,202 $41,037 $47,956 $47,573 $49,281 $45,494 $46,313 $43,146 $50,388 $22,529 $44,057 $50,987 $41,528 $43,944 $41,635 $41,950 $48,842 $52,805 $60,705 $50,746 $56,708 $42,182 $44,660 $41,464 $53,046 Table #9.3.4: Data of Income for Females $31,862 $60,332 $33,269 $29,548 $42,113 $41,412 $40,993 $40,550 $33,823 $32,684 $33,865 $33,459 $31,330 $29,688 $36,048 $35,438 $31,844 $31,067 $32,462 $31,329 $35,890 $30,752 $37,242 $34,599 $33,424 $35,746 $33,184 $34,381 $41,817 $31,238 $48,748 $35,484 $31,274 $35,301 $40,236 $39,150 $46,185 $41,021 $36,027 $32,843 $47,476 $34,023 $36,931 $47,155 $37,089 $38,177 $40,500 $33,745 $40,416 $32,316 $22,117 $40,969 9.3.3 3 A study was conducted that measured the total brain volume (TBV) (in mm ) of patients that had schizophrenia and patients that are considered normal. Table #9.3.5 contains the TBV of the normal patients and table #9.3.6 contains the TBV of schizophrenia patients ("SOCR data oct2009," 2013). Is there enough evidence to show that the patients with schizophrenia have less TBV on average than a patient that is considered normal? Test at the 10% level. 3 Table #9.3.5: Total Brain Volume (in mm ) of Normal Patients 1663407 1583940 1299470 1535137 1431890 1453510 1650348 1288971 1366346 1326402 1474790 1317156 1441045 1463498 1650207 1441636 1432033 1420416 1480171 1360810 1574808 1502702 1203344 1319737 1688990 1512571 1635918 1578698 1503005 1523045 1410213 1292641 3 Table #9.3.6: Total Brain Volume (in mm ) of Schizophrenia Patients 1331777 1487886 1066075 1297327 1499983 1368378 1476891 1443775 1337827 1658258 1690182 1569413 1177002 1387893 1483763 1563593 1317885 1420249 1363859 1238979 1325525 1588573 1476254 1648209 1354054 1861991 1588132 1688950 1286638 1354649 1636119