Answer:
to be honest I'm not sure how to do
Sample proportion: 190/425 = 0.45
ME = 1.96*sqrt[0.45*0.55/425] = 0.047
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95% CI: 0.45-0.047 < p < 0.45+0.047
Answer:
y
^2x-25
Step-by-step explanation:
Answer:
1. you can search that up
2. what does supplementary mean?
Step-by-step explanation:
sry i didnt help sry
mu = 1100 = population mean
sigma = 275 = population standard deviation
x = 1400 = raw score
z = z score
z = (x-mu)/sigma
z = (1400-1100)/(275)
z = 300/275
z = 1.0909090909091 approximately
z = 1.09
Convention is to round to two decimal places so that you can use a Z table to look up the area under the curve (which helps determine probability).
The positive z score is due to Paula's raw score being above the mean.