Математика. Материалы курса: Лабораторная работа 1. Сравнение средних выборочных совокупностей при известных дисперсиях генеральных совокупностей

Лабораторная работа 1. Сравнение средних выборочных совокупностей при известных дисперсиях генеральных совокупностей

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Cannot connect to external database:

Error: Database connection failed

It is possible that the database is overloaded or otherwise not running properly.

The site administrator should also check that the database details have been correctly specified in config.php

(Access denied for user 'do-mooc-log'@'localhost' (using password: YES))

line 105 of /admin/tool/log/store/database/classes/log/store.php: call to debugging()
line 141 of /admin/tool/log/store/database/classes/log/store.php: call to logstore_database\log\store->init()
line 106 of /admin/tool/log/classes/helper/buffered_writer.php: call to logstore_database\log\store->insert_event_entries()
line 132 of /admin/tool/log/classes/helper/buffered_writer.php: call to logstore_database\log\store->flush()
line 305 of /admin/tool/log/store/database/classes/log/store.php: call to logstore_database\log\store->helper_dispose()
line 195 of /admin/tool/log/classes/log/manager.php: call to logstore_database\log\store->dispose()
line 155 of /lib/classes/shutdown_manager.php: call to tool_log\log\manager->dispose()
line ? of unknownfile: call to core_shutdown_manager::shutdown_handler()