Among those who file tax returns, less tahn one half file them through an accountant or other tax professional. A Fellowes survey of 1002 people who file tax returns showed that 48% of them file through an accountant or other tax professional.
Find the value of the test statistic.
For adult females the SD of their white blood cell counts is equal to 5.00 the random sample of 40 adult females has white blood cell counts with a SD of 2.28.
Find the value of the test statistic.
For adult females the mean of their white blood cell counts is equal to 8.00 the random sample of 40 adult females has white blodo cell counts witha mean of 7.15 adn a SD of 2.28.
Find the value of the test statistic.