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Math Help - Means and Proportions

  1. #1
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    Means and Proportions

    Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed, but they want the average to be 10 or below. The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages. (a) At the .01 level of significance, is the true mean greater than 10? (b) Use the Excel to find the right -tail p-value.

    Can anyone help me with this?

    JorJasKi
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by JorJasKi View Post
    Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed, but they want the average to be 10 or below. The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages. (a) At the .01 level of significance, is the true mean greater than 10? (b) Use the Excel to find the right -tail p-value.

    Can anyone help me with this?

    JorJasKi
    Use a 1-sample t-test

    RonL
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