You are not logged in.
Post a reply
Topic review (newest first)
A t - table is the students distribution. That is for small sample sizes.
In part c,
p(x<15)=p(z< 15-19.5 / 2.612 )=p(z<-1.7225)=0.5-0.4573=0.0427
excuse me, how can you know p(x<15) in part b? i don't understand why the number is 15
b) P(15 or less agree) = .04248
A statistician conducted a research and the results showed that 65% of blue-collar workers agree that 8 working hours per day is acceptable. A random sample of n blue-collar workers was selected and let X be a random variable defined as the number of blue-collar workers agree the view.