Determine the expected value of x and interpret the value

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Market research indicates that 40% of retirees would be interested in the services of an investment advisor if they were approached. An analyst at an investment advisory firm in a regional city is interested to see if this advice seems applicable to their potential clients. Accordingly the analyst intends to approach a sample of 20 local retirees to see how many are interested in their advisory services. The analyst uses the random variable X to represent the number in the sample who indicate they are interested in the firm's services.

Question a. State the possible values that the variable X may take in this instance.

Question b. State the type of distribution X has and the parameter/s for this distribution

Question c. Determine the expected value of X and interpret this value.

Question d. Calculate (using the appropriate statistical tables) the probability that between five (5) and eleven (11) retirees would be interested in investment services

  • It turned out that only 2 of the retirees approached indicated that they would be interested in the firm's services.

Question e. Determine P(X=2) using the appropriate probability distribution function (formula).

Reference no: EM132468421

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