Question

both A and B, B

A statistical analysis of 1,000 long-distance telephone calls made by a company indicates that the length of these calls is normally distributed, with μ-290 second 50 seconds. Complete parts (a) through (d). EE Click here to view page 1 of the cumulative standardized normal distribution table. E Click here to view page 2 of the cumulative standardized normal distribution table. a. What is the probability that a call lasted less than 190 seconds? The probability that a call lasted less than 190 seconds is 0.0228 (Round to four decimal places as needed.) b. What is the probability that a call lasted between 190 and 380 seconds? The probability that a call lasted between 190 and 380 seconds is Round to four decimal places as needed.)

Answer 1

Page No Gttve) 290 a), calculate p(X<190) 50 So P2.oo "Z <-2.00 O:96441 O. 0 228 0.9412 Ans ul - 2 DO 1. 8