Let us begin from the first stage to answer to the first part of the question i.e.
a) Average number of ideas in mock up stage:
Given:
10 new toy ideas are generated per week
P(success) screening: 60%
Staff at screening stage: 2 & time per idea at screening: 2 hours
Working hour per staff: 8 hours a day & 5 days a week so total 8*5=40 hours a week
Solution:
10 ideas are generated on average out of which 60% pass through the screening stage and reach mock up stage
Thus, in total 60% of 10 ideas i.e. 0.6*10 = 6 ideas pass the screening stage
Capacity of the screening stage to pass ideas= frac{No. of per staff hours in a week*no. of staffs in stage}{time taken by each idea} =frac{40*2}{2}=frac{80}{2}= 40 ideas
As, capacity is enough to pass 6 ideas on an average thus 6 ideas are in mock up stage at an average.
b) Highest implied utilization:
We need to first calculate capacity of each stages with the same formula used in subpart a
1. Screening stage
Capacity=frac{80}{2}= 40 ideas
2. Mock up stage
Capacity= unlimited, given in the question
3. Safety
Capacity=frac{7*40}{2*24}=frac{280}{48}= 5.833 ideas
4.Focus group
Capacity=frac{40}{3}= 13.33 ideas
5. Final decision:
Capacity=frac{40}{4}= 10 ideas
Next we will calculate number of ideas that each stage.
Given Probabilities:
P(success) screening: 60%
P(success) safety: 50%
P(success) focus group:35%
P(success) final decision: 20%
Thus out of 10 ideas generated,
0.6*10= 6 ideas reach mockup stage
Then out of 6, all ideas reach safety i.e. 6
Then 50% of ideas at safety reach focus group i.e. 0.5*6=3 ideas
Then 35% of focus group reach final stage i.e. 0.35*3= 1 idea
Thus number of ideas at each stage:
1. Screening: 10
2. Mock up: 6
3. Safety: 6
4. Focus: 3
5. Final Decision: 1
Thus Implied uitilization of the stage can be calculated by frac{No. of ideas}{Capacity of the stage}frac{No. of ideas}{Capacity of the stage}
So, Implied utilization of
.1. Screening stage = frac{10}{40}= 0.25 = 25%
2. Mock up stage = frac{6}{infinity} =0%
3. Safety stage = frac{6}{5.833}=1.02=102%
4. Focus Group = frac{3}{13.33}=0.225=22.5%
5. Final Decision = frac{1}{10}=0.1=10%
Thus, Safety stage has the highest implied utilization of 102%
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