Question

Tiffani works in a baby shop in which she prints personalized bibs. She uses a probability model to predict that the next customer ordering a white bib would be 30%. For one day, Tiffani gathers data by tallying the the number of customers who order each color in this table.

Color Tally
white 21
grey 9
blue 15
pink 26

Based on her experiment, which statement is true?

Tiffani's prediction is valid. The probability of the next customer ordering a white bib is about 30%.

Tiffani's prediction is not valid. The probability of the next customer ordering a white bib should be about 21% because 21 people ordered white in her data.

Tiffani's prediction is not valid. The next customer ordering a white bib would be the same as any color, so the probability should be about 25%.

There is not enough information to determine the validity of her prediction.

Answer 1

Tiffani's prediction is valid. The probability of the next customer ordering a white bib is about 30%.

Explanation:

First you add all of your amounts together

21 + 9 + 15 + 26 = 71

Then to find the probability of the next customer buying a white bib you divide 21 by 71

21/71 = 0.295

Which is approximately 30%

I hope this helped!