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Stat-200: A study was conducted that measured the total brain volume (TBV) (in mm3 ) of patients that had schizophrenia and patients that are considered normal.

Stat-200: A study was conducted that measured the total brain volume (TBV) (in mm3 ) of patients that had schizophrenia and patients that are considered normal.: Expert Solutions for Success

A study was conducted that measured the total brain volume (TBV) (in mm³) of patients that had schizophrenia and patients that are considered normal. Table A contains the TBV of the normal patients and table B contains the TBV of schizophrenia patients. Compute a 99% confidence interval for the difference in TBV of normal patients and patients with Schizophrenia.

Table A: Total Brain Volume (in mm³) 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

Table B: Total Brain Volume (in ) of Schizophrenia Patients

1331777	1487886	1266075	1297327	1499983	1861991
1368378	1676891	1443775	1337827	1658258	1588132
1690182	1569413	1477002	1387893	1483763	1688950
1563593	1317885	1420249	1363859	1238979	1286638

Answer

We estimate with 99% confidence that the true mean TBV of people considered normal is anywhere from -116388mm³ less to 98840.02mm³ more than the mean TBV for people with schizophrenia

statistics Stat-200 confidence interval sample mean

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