Old friends information Service is a California company that is in the business of finding addresses of long lost friends. Old friends claims to have a 70% success race suppose that you have the names of seven friends for whom you have no addresses and decide to use the company to track themThe standard deviation of the probability distribution round your standard deviation to two decimal places
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A company is in the business of finding addresses of long-lost friends. The company claims to have a 60% success rate. Suppose that you have the names of nine friends for whom you have no addresses and decide to use the company to track them. Find the mean and standard deviation of this probability distribution. (Round your answers to two decimal places.) 𝜇 = friends 𝜎 = friends
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Locating People Old Friends Information Service is a California company that is in the business of finding addresses of long-lost friends. Old Friends claims to have a $70 \%$ success rate (Source: Wall Street Journal). Suppose that you have the names of six friends for whom you have no addresses and decide to use Old Friends to track them. (a) Make a histogram showing the probability of $r=0$ to 6 friends for whom an address will be found. (b) Find the mean and standard deviation of this probability distribution. What is the expected number of friends for whom addresses will be found? (c) Quota Problem How many names would you have to submit to be $97 \%$ sure that at least two addresses will be found?
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A company is in the business of finding addresses of long-lost friends. The company claims to have a 78% success rate. Suppose that you have the names of eight friends for whom you have no addresses and decide to use the company to track them. (a) Find the mean and standard deviation of this probability distribution. What is the expected number of friends for whom addresses will be found? (Round your standard deviation to two decimal places.) μ = friends σ = friends (b) What is the smallest number of names would you have to submit to be at least 96% sure that at least two addresses will be found? (Enter your answer as a whole number.)
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