We know that football is the favorite sport to watch on television for 43% of adults in the United States. Suppose we take a random sample of 515 adults and obtain their opinions on their favorite sport to watch on television.

7. The probability that 193 or more will say that football is their favorite sport to watch on television is approximately: (Round the answer to 4 decimal places.)

8. Suppose that the distribution for a random variable x is normal with mean 15 and standard deviation , and P(x 0) 0.0608 . Rounded to two decimal places, what is

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Use the following to answer question 9:

In a recent Gallup poll, 57% of parents with children under 18 years of age gave themselves a grade of B for the job they are doing bringing up their kids. Assume that this percentage is true for the current population of all parents with children under 18 years of age. You take a random sample of 963 such parents and ask them to give themselves a grade for the job they are doing bringing up their kids.

9. The probability that 550 or less will give themselves a grade of B is approximately: (Round the answer to 4 decimal places.)

10. 95.4% of the parts coming off an assembly line are non-defective. Using the normal approximation to the binomial distribution, what is the probability, rounded to four decimal places, that of 485 parts, fewer than 463 are non-defective?