For children in the low income group, find a 99% confidence interval for the proportion of children that drew the nickel too large.

Give all answers correct to 3 decimal places.

a) Critical value (positive value only):

b) Margin of error: Preview Question 6 Part 2 of 10  

c) Confidence interval: < $\displaystyle {p}$ <

d) Does the confidence interval support the claim that more than 40% of children from the low income group draw nickels too large?

For the high income group, find a 95% confidence interval for the mean nickel diameter.

e) Critical value (positive value only):

f) Margin of error: Preview Question 6 Part 7 of 10  

g) Confidence interval: < $\displaystyle \mu$ <

h) Does the confidence interval support the claim that average nickel size drawn by children from the high income is less than 22 mm?