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Suppose the distribution below represents the probability of a person to make a certain grade in  Chemistry 101, where x = the letter grade of the student in the class (A=4, B=3, C=2, D=1, F=0).  2. Determine the probability that a student selected at random would make a C or higher in  Chemistry 101.  X 0 1 2 3 4  P(X) 0.08 0.22 0.34 0.21 0.15 

Blossom’s Flowers purchases roses for sale for Valentine’s Day. The roses are purchased for $10 a dozen and are sold for $20 a dozen. Any roses not sold on Valentine’s Day can be sold for $5 per dozen. The owner will purchase 1 of 3 amounts of roses for Valentine’s Day: 100, 200, or 400 dozen roses. Given 0.2, 0.4, and 0.4 are the probabilities for the sale of 100, 200, or 400 dozen roses, respectively, then the EOL for buying 200 dozen roses isa) $700b) $900c) $1,500d) $1,600

The assembly line that produces an electronic component of a missile system has historically resulted in a 2% defective rate. A random sample of 800 components is drawn. What is the probability that the defective rate is greater than 4%? Suppose that in the random sample the defective rate is 4%. What does that suggest about the defective rate on the assembly line?

32% of certain country’s voters think that it is too easy to vote in their country. You randomly select 12 likely voters. Find the probability that the number of likely voters who think that it is too easy to vote is (a) exactly three, (b) at least four, (c) less than eight.

37% of women consider themselves fans of professional baseball. You randomly select six women and ask each is she considers herself a fan of professional baseball. Complete parts (a) through (d) below (a) find the mean of the binomial distribution. U=