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Suppose that we've decided to test Clara, who works at the Psychic Center, to see...

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Suppose that we've decided to test Clara, who works at the Psychic Center, to see if she really has psychic abilities. While talking to her on the phone, we'llthoroughly shuffle a standard deck of 52 cards (which is made up of 13 hearts, 13 spades, 13 diamonds, and 13 clubs) and draw one card at random. We'll askClara to name the suit (heart, spade, diamond, or club) of the card we drew. After getting her guess, we'll return the card to the deck, thoroughly shuffle thedeck, draw another card, and get her guess for the suit of this second card. We'll repeat this process until we've drawn a total of 15 cards and gotten her suitguesses for each.Assume that Clara is not clairvoyant, that is, assume that she randomly guesses on each card.Answer the following.(If necessary, consult a list of formulas.)(a) Estimate the number of cards in the sample for which Clara correctly guesses the suit by giving the mean of therelevant distribution (that is, the expectation of the relevant random variable). Do not round your response.(b) Quantify the uncertainty of your estimate by giving the standard deviation of the distribution. Round your responseto at least three decimal places.X5 2

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