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Individuals who have a certain gene have a 0.50 probability of contracting a certain disease. Suppose that 1,940 individuals with the gene participate in a lifetime study. What is the standard deviation of the number of people who eventually contract the disease? Round your answer to 2 decimal places.

  • Statistics - ,

    standard deviation = √npq

    n = sample size = 1940
    p = 0.50
    q = 1 - p = 0.50

    I'll let you take it from here.

  • Statistics - ,

    The time it takes for climbers to reach the highest point of a mountain is normally distributed with a standard deviation of 0.75 hours. If a sample of 35 people is drawn randomly from the population, what would be the standard error of the mean of the sample

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