Respuesta :
Answer:
Margin of Error = 1.96 [tex]\times[/tex] 7.75 = 15.19
Step-by-step explanation:
i) Margin of Error of a population with a standard deviation of 7.75?
ii) Let us assume a two tailed test with a 95% confidence interval
iii) [tex]Z_{\frac{\alpha }{2} } = Z_{\frac{\ 0.05 }{2} } = Z_{0.025} = 1.96[/tex]
iv) therefore Margin of Error = 1.96 [tex]\times[/tex] 7.75 = 15.19
