tatemelliott
05.05.2020 •
Mathematics
The amount of electricity bills for all households in a city have a skewed probability distribution with a mean of $139 and A standard deviation of $30.Find the probability that the mean amount of electric bills for a random sample of 75 Households selected from this city will be between $132 and $136.
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Ответ:
Step-by-step explanation:
Given
See attachment for tree and the stake
Required
The height of the tree
From the attachment, the height is represented by DF.
DF is calculated using the following equivalent ratios
This gives:
Express as fraction
Solve for DF