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Math Help - Please Help 3

  1. #1
    Junior Member
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    Please Help 3

    1. A random sample of 150 students has a test score average with a standard deviation of 0.78. Find the error of the estimate if c=0.98.

    2. In a random sample of 28 families, the average weekly food expense was $95.60 with a standard deviation of $22.50. Assume the distribution of

    I greatly appreciate any one's help. These are problems I have struggled with this semester....and now that the end is winding down I would love to figure them out for future references. Thank so much to everyone!
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by loutja35 View Post
    1. A random sample of 150 students has a test score average with a standard deviation of 0.78. Find the error of the estimate if c=0.98.

    2. In a random sample of 28 families, the average weekly food expense was $95.60 with a standard deviation of $22.50. Assume the distribution of

    I greatly appreciate any one's help. These are problems I have struggled with this semester....and now that the end is winding down I would love to figure them out for future references. Thank so much to everyone!
    For the first explain what c=0.98 means, also the second is incomplete

    CB
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