A manager records the repair cost for 4 randomly selected TVs. A sample mean of $88.46 and standard deviation of $17.20 are subs
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Divide the silver present in the bar by the total weight of the bar to find the percentage of silver in the bar.
Multiply this decimal by 100 for the percentage.
Rounded to the nearest tenth, 71.4% of the weight of the bar is silver.
Multiply this decimal by 100 for the percentage.
Rounded to the nearest tenth, 71.4% of the weight of the bar is silver.