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(Solved): A construction engineer is faced with the problem of assessing the tile damage in a certain group ...



A construction engineer is faced with the problem of assessing the tile damage in a certain group of downtown buildings. The

A construction engineer is faced with the problem of assessing the tile damage in a certain group of downtown buildings. The total number of tiles on these proportion of all the tiles that are cracked. Out of the sample of \( n=1250 \) tiles, \( x=980 \) are found to be cracked. (a) Calculate a \( 90 \% \) confidence interval for the true proportion of cracked tiles. Lower Bound Upper Bound How many tiles will she have to sample to achieve this?


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Solution : Given that n = 1250 x = 980 Poin
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