Mean of total case 417548.73 and calculate one sample hypothesis- ztest

This dataset contains the latest Covid-19 WORLD state-wise data in detail from 24/2/2020 to 29/6/2021. This dataset can be used to analyze covid conditions in the World. This dataset is great for Exploratory Data Analysis. This data has 44 variables, but for this assignment only consider the following list. Each group will be given a data set on the following: Variable Name Description of Variable total cases number of total cases total death number of total death new cases number of total new cases new deaths number of total new death positive rate number of total positive rate total vaccinations number of total vaccination aged_65_older age more 65 aged_70_older age more 70 female smokers rate female smokers male smokers rate male smokers diabetes prevalence rate diabetes prevalence cardiovascularate cardiovascular death rate 1. At 5% level of significance, is there evidence that the mean of total cases is more than 140000? Test the hypothesis