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Test statistic and P-value in a goodness-of-fit test

You might need: Calculator,Chi-squared table


Finn read an article claiming that 50% of Americans have brown hair, 20% have black hair, 20% have blonde hair, and 10% have red hair. He wondered if the hair colors of students at his school followed this distribution, so he took a random sample of 50 students and recorded their hair colors. Here are his results:
He wants to use these results to carry out a χ2 goodness-of-fit test to determine if the distribution of hair colors at his school disagrees with the claimed percentages.
What are the values of the test statistic and P-value for Finn's test?
Choose 1 answer: