Find the missing number according to the associative property (20×5)×11= 20×(11×

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4