Answer:
3 3/4
Step-by-step explanation:
5×
5 3
/ × /
1 4
= 15/4
=3 3/4
Answer:
The 99% confidence interval for the proportion of ASD in Arizona is (0.014, 0.018).
Step-by-step explanation:
The information provided is as follows:

The sample proportion is:

The critical value of <em>z</em> for 99% confidence level is, <em>z</em> = 2.56.
Compute the 99% confidence interval for the proportion of ASD in Arizona as follows:


Thus, the 99% confidence interval for the proportion of ASD in Arizona is (0.014, 0.018).
Answer:
area of trapezium=1/2 ×20(38+18)=560cm²