Respuesta :
Answer:
Step-by-step explanation:
The given scores are 628 593 455 503
Mean = sum of scores/number of scores
Mean = (628 + 593 + 455 + 503)/4
Mean = 544.75
Standard deviation = √summation(x - mean)/n
Summation x - mean =
(628 - 544.75)^2 + (593 - 544.75)^2 + (455 - 544.75)^2 + (503 - 544.75)^2 = 19056.75
n = 4
Standard deviation = √(19056.75/4) = √4764.1875
= 60.02
The standard error of the mean = standard deviation/√n
Standard error = 60.02/√4 = 30.01
it is inappropriate to calculate a confidence interval for these data. This is because confidence interval is usually calculated for an unknown population parameter. From the data given, the population parameters are already known
