Mathematics, 05.05.2020 04:15 miguelsanchez1456
5) In a certain supermarket, a sample of 60 customers who used a self-service checkout lane averaged 5.2 minutes of checkout time, with a standard deviation of 3.1 minutes. A sample of 72 customers who used a cashier averaged 6.1 minutes with a standard deviation of 2.8 minutes. Suppose it is reasonable to assume that the two variance of the two groups are the same. Can you conclude that the mean checkout time is less for people who use the self-service lane
Answers: 2
Mathematics, 21.06.2019 18:30, mikey8510
The median of a data set is the measure of center that is found by adding the data values and dividing the total by the number of data values that is the value that occurs with the greatest frequency that is the value midway between the maximum and minimum values in the original data set that is the middle value when the original data values are arranged in order of increasing (or decreasing) magnitude
Answers: 3
Mathematics, 22.06.2019 02:30, avagymnast421
Kate is arranging new furniture in her rectangular sitting room. she has mapped the arrangement on a coordinate pane. a, b and c represent the sofas, v1 and v2 are decorative vases and aq the aquarium. find the distance between v1 and the aquarium. any body you
Answers: 3
5) In a certain supermarket, a sample of 60 customers who used a self-service checkout lane averaged...
Mathematics, 28.04.2021 03:50
Mathematics, 28.04.2021 03:50
Mathematics, 28.04.2021 03:50
Mathematics, 28.04.2021 03:50
Physics, 28.04.2021 03:50
Chemistry, 28.04.2021 03:50