The distribution of the time until change (in days) of a Web site is approximated in the following table. Days until Changes Probability 1.5 0.15 3.0 0.15 4.5 0.40 5.0 0.20 7.0 0.10 Let the random...

The distribution of the time until change (in days) of a Web site is approximated in the following table.<br>Days until Changes Probability<br>1.5<br>0.15<br>3.0<br>0.15<br>4.5<br>0.40<br>5.0<br>0.20<br>7.0<br>0.10<br>Let the random variable X denote the days until change.<br>Calculate the mean for X. Give exact answer.<br>E(X) =<br>i<br>days<br>Calculate the variance for X. Round your answer to three decimal places (e.g. 98.765).<br>V(X) = i<br>days?<br>

Extracted text: The distribution of the time until change (in days) of a Web site is approximated in the following table. Days until Changes Probability 1.5 0.15 3.0 0.15 4.5 0.40 5.0 0.20 7.0 0.10 Let the random variable X denote the days until change. Calculate the mean for X. Give exact answer. E(X) = i days Calculate the variance for X. Round your answer to three decimal places (e.g. 98.765). V(X) = i days?

Jun 10, 2022

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The distribution of the time until change (in days) of a Web site is approximated in the following table. Days until Changes Probability 1.5 0.15 3.0 0.15 4.5 0.40 5.0 0.20 7.0 0.10 Let the random...

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