Question

In a recent year, the average daily circulation of the Wall Street Journal was 2,276,207. Suppose the standard deviation is 70,940. Assume the paper's daily circulation is normally distributed (a) On what percentage of days would circulation pass 1,816,000? (b) Suppose the paper cannot support the fund expenses of a full production setup if the circulation drops below 1,621,000. If the probability of this even occurring is low, the production manager might try to keep the full crew in place and not disrupt operations. How often will this even happen, based on this historical information? (Round the values of to 2 decimal places. Round your answers to decimal places) (a) Plx > 1.816.000) - (b) Pix < 1,621,0001 -

Answer 1

Solution de have given Hese of thewall The axerage daily circulation street jaurnal is H 2276 207 and standard deviation iss 70 g40 X NCA=2276207 6270940 PCX 1816000 81600 0-2276267 PX-N 70940 P(ZZ-6.49 PCX 18160U0 PCX 1,621, 000)-P X 1621 000-2276207 70940 PCZ<-9.24 I.2 18X10-2o PCX 162I 000