We are setting up virtual shopping tasks on an online survey. in each shopping task, we can only show up to 20 products on the screen. there are 80 products in total that we want to test. how many shopping tasks do we need to show so that on average, each product is shown 3 times throughout all the shopping tasks? assume all products are selected randomly and have an equal chance of being selected.

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step-by-step explanation:

0.84 dang lotta people are looking for this lol or if you round up its 1 but the overall answer to that is 0.84

step-by-step explanation:

i think is g(1)=-1.

hope that i can

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92