Otto I (23 November 912 – 7 May 973), traditionally known as Otto the Great(German: Otto der Große, Italian: Ottone il Grande), was German king from 936 and Holy Roman Emperor from 962 until his death in 973.[b] He was the oldest son of Henry I the Fowler and Matilda. Otto the Great
12th-century stained glass depiction of Otto I, Strasbourg Cathedral
Holy Roman EmperorReign2 February 962 – 7 May 973Coronation2 February 962[1] Old St. Peter's Basilica, RomePredecessorBerengar of FriuliSuccessorOtto IIKing of ItalyReign25 December 961 – 7 May 973Coronation10 October 951[a] PaviaPredecessorBerengar IISuccessorOtto IIKing of Germany (East Francia)Reign2 July 936 – 7 May 973Coronation7 August 936 Aachen CathedralPredecessorHenry the FowlerSuccessorOtto IIDuke of SaxonyReign2 July 936 – 7 May 973PredecessorHenry the FowlerSuccessorBernard I
Born23 November 912 possibly Wallhausen, East Francia[2]Died7 May 973 (aged 60) Memleben, Holy Roman EmpireBurial
Magdeburg Cathedral
SpouseEadgyth of England(930–946) Adelaide of Italy(951–973)IssueWilliam, Archbishop of Mainz Liutgarde of Saxony Liudolf, Duke of Swabia Matilda, Abbess of Quedlinburg Otto II, Holy Roman EmperorDynastyOttonianFatherHenry the FowlerMotherMatildaReligionRoman CatholicSignum manus Otto inherited the Duchy of Saxony and the kingship of the Germans upon his father's death in 936. He continued his father's work of unifying all German tribes into a single kingdom and greatly expanded the king's powers at the expense of the aristocracy. Through strategic marriages and personal appointments, Otto installed members of his family in the kingdom's most important duchies. This reduced the various dukes, who had previously been co-equals with the king, to royal subjects under his authority. Otto transformed the Roman Catholic Church in Germany to strengthen royal authority and subjected its clergy to his personal control. After putting down a brief civil war among the rebellious duchies, Otto defeated the Magyarsat the Battle of Lechfeld in 955, thus ending the Hungarian invasions of Western Europe.[3]The victory against the pagan Magyars earned Otto a reputation as a savior of Christendomand secured his hold over the kingdom. By 961, Otto had conquered the Kingdom of Italy. The patronage of Otto and his immediate successors facilitated a so-called "Ottonian Renaissance" of arts and architecture. Following the example of Charlemagne's coronation as "Emperor of the Romans" in 800, Otto was crowned Holy Roman Emperorin 962 by Pope John XII in Rome. Otto's later years were marked by conflicts with the papacy and struggles to stabilize his rule over Italy. Reigning from Rome, Otto sought to improve relations with the Byzantine Empire, which opposed his claim to emperorship and his realm's further expansion to the south. To resolve this conflict, the Byzantine princess Theophanumarried his son Otto II in April 972. Otto finally returned to Germany in August 972 and died at Memleben in May 973. Otto II succeeded him as Holy Roman Emperor.
At the level of 0.05% significance we can not reject the psychologist's claim. His claim is supported.
Explanation:
When a researcher undertakes a project to do research firstly he takes some random samples. Sample is definite a small group of numbers assume to represent the whole population. Suppose a researcher wants to do research on married couples to find the trend of divorce among them. For that reason he will randomly choose some of the couples and will draw conclusions that inter personal communication reduce the chances of divorce.
Now to establish this experiment as a fact he needs to go through a test of level of significance. Where he will get the result that his statement is established or rejected.