Question

UNCLE Sul Peofuary 5, 2020 inclusive les for all natural ices, and to make additional tariff changes. Consistent with all riders except for the PSIA held at cons sion rules and Colorado statutes, the effective date for the changed However, the Company has a separate a 19AL-0309G) currently pending before th companying the Advice Letter is March 7, 2020. However, if proceeding does not change the Compa mission suspends the Advice Letter and sets it for hearing, the will change the Company's base rates is requesting an effective date of November 1, 2020. 1, 2020, if the unopposed settlementa any is filing this rate case because Public Service's current base approval by an Administrative Law Ju emised on the cost of providing service in 2016, and since that The "Rates Expected March 1st" col on differences between the Compar ments and changes to costs incurred to provide safe and reliable rates for all customers that are anti ustomers, manage system capacity, perform certain mandated pending rate case and take effect d undertake other efforts to serve customers have rendered que deficientugun In accordance with Rule 1210(a) of 3 List the assumptions for the x- test of independence.

Answer 1

Assumptions for the x test of independence. > All the independent observation must be independent. Men B) The total number of observation should be large. The chi-squase test should not be used if n> 50 . s) All the events must be mutually exclusive. a It can be applied to variables measured az a nominal and I or an ordinal level of measurement. The expected frequencies should be greater than 5 in each cell. The data in the cell should be frequencies or counts of cases rather than percentages or some other transtormation of the data. 119292222