5- The graph below is the CDF of a discrete r-v- X- Give the pmf of X-.docx

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The graph shows the cumulative distribution function (CDF) of a discrete random variable X. From the CDF, we can determine the probability mass function (pmf) of X, as well as the expected value E(X) and variance Var(X).

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5. The graph below is the CDF of a discrete r.v. X. Give the pmf of X , E ( X ) and Var ( X ) .

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74 Igmeouss Rocks Vilmene rexis ane moks that have on wallind frum lass - Fiyen 45 - d tieler cuer uat a compenelte velcanu C4.1s Buanew ia the arrial phesograph in ficure 4.8 . Hy if the erater ham been bexacbet ly a marrew dark. Moumt St. Melens, Wrashington Aerial photo made bofore 1900 eruption Igneous Rocks it ile iruter has bere breached by a Mount St. Helens, Washington Aerial photo made before 1960 eruption .

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75% of Puerto Ricans who immigrated to the United States After the earthquake at the beginning of 2020, they plan to return to the Island during the summer months 2021. According to the southern newspaper, in the past months there has been an increase in visitors from other countries to the beach areas of the northwest and southwest. On average, a Puerto Rican hostel hosts 45 foreign tourists per week and the standard deviation of 13.5 guests. It is important to establish that 60% of tourists from the Paradores are residents of Puerto Rico. We are interested in knowing how many the average hours employees work and to achieve this we selected a random sample of 32 weeks. Determine: a) What is the probability that the average number of foreign tourists from the sample is between 40 and 48 weekly tourists? b) What is the probability that the average number of foreign tourists be at least 43 a week? .

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