If you're seeing this message, it means we're having trouble loading external resources on our website.

Jeżeli jesteś za filtrem sieci web, prosimy, upewnij się, że domeny *.kastatic.org i *.kasandbox.org są odblokowane.

Główna zawartość

P-value w teście t dla grup niezależnych

Możesz potrzebować: Kalkulatora,tabela t

Zadanie

A media streaming service allows users to watch shows on their smartphones or tablets. An analyst wondered if users watching on tablets spend more time watching shows than users on smartphones. They took a separate random sample of each type of user to see how many hours they watched in total last month. Here is a summary of the results:
Hours watchedTabletSmartphone
Mean6.56.0
Standard deviation2.62.2
Number of users6772
The analyst wants to use these results to test H0μTμS=0 versus HaμTμS>0. Assume that all conditions have been met.
What is the P-value associated with these sample results?
Wybierz 1 odpowiedź: