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part 1. You measure 24 dolphins' weights, and find they have a mean weight of 36...

part 1.

You measure 24 dolphins' weights, and find they have a mean weight of 36 ounces. Assume the population standard deviation is 13.2 ounces. Based on this, construct a 95% confidence interval for the true population mean dolphin weight.

Give your answers as decimals, to two places

part 2.
Linda draws a heart from a standard deck of 52 cards. She returns the heart to the deck, then draws a second card. Her second card is a spade.

  1. Are these events independent?
    1. Input Yes or No:
  1. Determine the probability of drawing a heart and then a spade withreplacement.
    Write your answer in decimal form, rounded to two decimal places as needed.
    1. Answer =

      PART 2.
      The nurse at the elementary school decided to collect data on the students that come to see her throughout the day for symptoms of a sore throat, stomachache, or headache. The table below summarizes her results.
      Sore Throat Stomachache Headache Total
      Male 2 5 12 19
      Female 10 20 19 49
      Total 12 25 31 68


      If one student is chosen at random,

      Find the probability that the student was male OR had a "Headache". Express as decimal rounded to two places.
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