Answer: The standard error of the sample mean = 0.44
Step-by-step explanation:
Standard error of the sample mean = [tex]\dfrac{\sigma}{\sqrt{n}}[/tex] , where [tex]\sigma[/tex] = population standard deviation , n= sample size.
Given : n= 45 , [tex]\sigma= 2.96[/tex] grams
The e standard error of the sample mean [tex]=\dfrac{2.96}{\sqrt{45}}[/tex]
[tex]=\dfrac{2.96}{6.7082039325}\\\\\approx\ 0.44[/tex]
Hence, the standard error of the sample mean = 0.44
