A company that has many department stores in the southern states wanted to find at two...
A company that has many department stores in the southern states wanted to find at two such stores the percentage of sales for which at least one of the items was returned. A sample of 800 sales randomly selected from Store A showed that for 280 of them at least one item was returned. Another sample of 900 sales randomly selected from Store B showed that for 279 of them at least one item was returned.
a. Construct a 98% confidence interval for the difference between the proportions of all sales at the two stores for which at least one item is returned.
b. Using a 1% significance level, can you conclude that the pro-portions of all sales for which at least one item is returned is higher for Store A than for Store B?
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A company that has many department stores in the southern states
wanted to find at two...
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please show how to calculate on ti 84 calculator சரகானா பாயாக The owner of a chain...
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13. Most people have returned clothing or other items to stores. Acme holding company is particularly interested in the clothes that have been returned after the winter holidays. It requires its stores to keep records of these clothes if they cost over $75.00. Acme's corporate office is worried about a new store (N) it recently purchased. The store seems to have a high proportion of returns compared to an established store (E) in a similar neighborhood. After the last holiday...
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urgent
has three packaging designs for a new product. In a trial evaluation, 15 stones from similar and supplied the new item. Only one package design, however, is used in A company marketing areas are selected any one store. The number of sales during the first 45 days following the introduction of the product are given below DesignI Design II Design IlI 240 255 285 260 360 410 205 280 340 360 370 280 340 450 (a) Write down the...
please show how to calculate on ti 84 calculator
சரகானா பாயாக The owner of a chain of mini-markets wants to compare the sales performance of two of her stores, Store 1 and Store 2. Though the two stores have been comparable in the past, the owner has made several improvements to Store 1 and wishes to see if the improvements have made Store 1 more popular than Store 2. Sales can vary considerably depending on the day of the week...
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