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on friday, there were 8 snowboarders for every 3 skiers at a local ski resort. on saturday, the ratio of the number of snowboarders to the number of skiers was 4: 7. there were 168 snowboarders at the ski resort on friday. there were the same number of people at the ski resort on saturday as there were on friday. how many more skiers were there than snowboarders at the ski resort on saturday?

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)