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1) A prescription drug company believes they may have a miracle vaccine to prevent the common...

1) A prescription drug company believes they may have a miracle vaccine to prevent the common cold. A random sample of 100 healthy people was taken before the height of flu/cold season, with some being randomly assigned the cold vaccine. A month later, those 100 people were checked to see if they had a cold. The results are displayed in the table below

Vaccine NoVaccine
Cold 30 40
No Cold 20 10

a) Create a new table and calculate the expected values for each cell under the assumption that receiving a vaccine and having a cold is independent of one another.

b) Can we perform a Chi-Square test for independence on this data? Why or why not.

c) Perform the Chi-Square test for independence to determine if the variables “receiving a vaccine” and “having a cold” are independent.

math   Statistics-And-Probability   
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o Table ssV let 30-0 CAd | 30 | 40 | 구 4- freguanty → Table. No に3 ヒ4- o.71429 2. S 3 are turo vaia Vaccine and cd =4.7619 CM

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