Suppose the u. s. president wants to estimate the proportion of the population that supports his current policy toward revisions in the health care system. the president wants the estimate to be within 0.03 of the true proportion. assume a 99% level of confidence. the president’s political advisors found a similar survey from two years ago that reported that 62% of people supported health care revisions. how large of a sample is required?

385

Step-by-step explanation:

sample size n = pq(z/E)^2 = 0.6*(1-0.6)*(1.96/0.05)^2 =(NNN) NNN-

Round up to 369

369

b. how large a sample would be necessary if no estimate were available for the proportion supporting current policy?

sample size n = pq(z/E)^2 = 0.5*0.5*(1.96/0.05)^2 = 384.16

Round up to 385

385

answer: city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

since we have given that

total annual rainfall a city record = 40 inches

this year, total rainfall recorded = 37.6 inches

number of inches of rainfall   is needed to match the record of 40 inches is given by

hence, city needs 2.4 inches of rainfall more to match the record of 40 inches.

salary

step-by-step explanation: