Tanja is converting a fraction into a decimal by finding an equivalent fraction that has a power of 10 in the denominator. sara looks at the last step in tanja's work (shown below) and says that she cannot go any further. is sara correct? if she is, explain why. if sara is incorrect, complete the remaining steps.
\frac{72}{480} = \frac{ 2^{3} * 3^{2} }{2^{5}*3*5 }
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According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.