P: if every fourth card drawn is a spade, then 25% of the cards in a deck would be spades. if 25% of the cards in a deck are spades, then every fourth card drawn would be a spade. if every fourth card drawn isn’t a spade, then 25% of the cards in a deck aren’t spades. if 25% of the cards in a deck aren’t spades, then every fourth card drawn wouldn’t be a spade. if every fourth card drawn isn’t a spade, then 75% of the cards in a deck are spades.

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function. a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.