Abakery in dylan's town sells bagels, cakes, pies, and donuts. on a particular day, dylan observed that 7 out of every 10 customers at the bal

included at least one bagel in their order. from this sample, dylan concluded that bagels are the bakery's most popular item.

dylan's conclusion is

a. valid

b. not valid

because

a. bagels are consumed in the morning, not throughout the day

b. dylan did not account for the other items purchased, only bagels

c. seven tenths is a relatively small fraction

d. the bakery’s business hours are not mentioned

Dylan's conclusion is not valid, because Dylan did not account for the other items purchased, only bagels.

In this case, Dylan didn't measured equally all items, just bagels, which means that he didn't established a comparative about each item purchase to calculate the popularity. To set a costumer favorite product, Dylan must drive a proper investigation, recollecting data from several days and different products, that why he will be able to say "bagels are the most popular product", or "pies and cakes is the item most purchased on Tuesdays". Actually, this is the correct way to collect all data to define a marketing plan, which will help the bakery profitability.

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

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step-by-step explanation: