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On a roulette wheel, red colors will turn up 18 out of 38 times. The proportion...

On a roulette wheel, red colors will turn up 18 out of 38 times. The proportion of getting a red number is 0.47. After betting 401 times, you get 191 red numbers. Can you prove that the wheel is rigged? Test for a 0.20 level of significance.

Calculate the test statistic:

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