A well-known brokerage firm executive has indicated that 30% of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that in a sample of 400 people, 38% of them said they are confident of meeting their goals. Test the claim that the proportion of people who are confident is larger than 30% at the 0.01 significance level

p-VALUE =0.00019999999999998

How do you get that answer

ti-84

1-prop test

z=3.49

p=2.4

p^=.38

n=400