Answer:
0.6069
Step-by-step explanation:
Given an approximately normal distribution:
Z = (x - mean) / standard deviation
Mean = 69.3 ; Standard deviation = 2.58
For :
P(x < 70)
Z = (70 - 69.3) / 2.58
Z = 0.7 / 2.58
Z = 0.2713
P(Z < 0.2713) = 0.6069
Answer:
Among the given samples the sample which constitute a biased sample is given by, the sample obtained by,
'Surveying randomly among seventh grade girls of a school to determine what theme the whole school would prefer for the dance.'
Step-by-step explanation:
Among the given samples the sample which constitute a biased sample is given by, the sample obtained by,
'Surveying randomly among seventh grade girls of a school to determine what theme the whole school would prefer for the dance.' since the choices of those seventh grade girls in the sample may not reflect those of the whole school.
Answer:
?? not clearly re sent ..
