how do you solve these please help

It can be very difficult to break into the music industry, but after having a breakout piece or two, it can be much easier to stay relevant. Suppose the number of top 100 hits a band produces over its career for its particular genre can be modeled with the following distribution. Use 3 decimal places where appropriate. Number of Hits Prabah ty 0 0.91 1 0.01 2 0.01 3 0.01 4 0.06 a] What is the probability a band makes it big (i.e. has at least one "top 100 hit\") b) For bands that get at least one top 100 hit, what proportion will have at least 2 top 100 hits? S c) What is the expected number of top 100 hits per band entering this genre? E d) How should we interpret the value from part is)\" O This many bands will have a top 100 hit across many, many years. 0 This is the average number of top 100 hits we should expect to see per band across many bands that enter this genre. 0 This is the average number of years a band will stay on the top 100 list for its genre. 0 This many bands will have a top 100 hit each year. Wewing Saved Work Revert to Last Response Submit Answer TleSmartViewTI784....msi A E Dental FormiDNKApdf A MY NOTES A researcher investigated the size of farms. They took a random sample of 2010 farms in the United States and measured the size (in acres). Below is a summary of the results. Farm Size (in acres) 0-40 4180 81-120 121160 161-200 201240 2241 (a) For a randomly selected farm, what is the probability it is more than 160 acres? \\:| (b) For a randomly selected farm, given it is less than 161 acres, what is the probability the size is between 41 and 80 acres? I: Frequency 394 461 391 334 169 1.13 148 Consider two events, W and D. Let P(W) = 0.2, let P(D) = 0.4, and let P(W and D) = 0.08. a) What is true of events W and D? O Events W and D are independent and are mutually exclusive. O Events W and D are not independent but are mutually exclusive. O Events W and D are independent but are not mutually exclusive. O Events W and D are not independent nor are they mutually exclusive. O Events W and D are not mutually exclusive, but we cannot determine one way or the other about independence. b) Find the probability of W or D: P(W or D). (2 decimal places) Submit Answer DETAILS MY NOTES Scores on a certain section of a standardized test are bell-shaped with mean = 130 and a standard deviation of 12. a) What proportion of test scores should fall between 105 and 156? (3 decimal places) 0.966 b) What interval contains the central 90 percent of the test scores? (3 decimal places, lower value first). to Viewing Saved Work Revert to Last Response