For many years, TV executives used the guideline that 30% of the audience was watching each of

Fantastic news! We've Found the answer you've been seeking!

Question:

For many years, TV executives used the guideline that 30% of the audience was watching each of the traditional big three prime-time networks and 10% were watching cable stations on a weekday night. A random sample of 500 viewers in the Tampa–St. Petersburg, Florida, and area last Monday night showed that 170 homes were tuned in to the ABC affiliate, 140 to the CBS affiliate, 140 to the NBC affiliate, and the remainder was viewing a cable station. At the .02 significance level, can we conclude that the guideline is still reasonable?
H ₀: The proportions are as stated H ₁: The proportions are not as stated
Reject H ₀ if x ² >

H _o: the guideline is still reasonable: 30%, 30%, 30%, and 10%

H ₁: the guideline is NOT reasonable