Asked Jan 11, 2020

Vision Correction A survey sponsored by the Vision Council showed that 79% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 20 adults are randomly selected, find the probability that at least 19 of them need correction for their eyesight. Is 19 a significantly high number of adults requiring eyesight correction?


Expert Answer

Step 1

Binomial distribution:

The probability mass function for binomial distribution is,

Statistics homework question answer, step 1, image 1
Step 2

The probability that at least 19 of them need correction for their eye...

Statistics homework question answer, step 2, image 1

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