Mathematics, 06.08.2019 20:10 jkenkw4667
Service time for a customer coming through a checkout counter in a retail store is a random variable with the mean of 3.5 minutes and standard deviation of 4.0 minutes. suppose that the distribution of service time is fairly close to a normal distribution. suppose there are two counters in a store, n1=35 customers in the first line and n2=45 customers in the second line. find the probability that the difference between the mean service time for the shorter line x¯1 and the mean service time for the longer one x¯2 is more than 0.8 minutes. assume that the service times for each customer can be regarded as independent random variables.
Answers: 1
Mathematics, 21.06.2019 22:00, juhavyen
Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.
Answers: 1
Service time for a customer coming through a checkout counter in a retail store is a random variable...
English, 12.11.2020 16:30
English, 12.11.2020 16:30