Supermarket shoppers were observed and questioned immediately after putting an item in their cart. Of a random sample of 230 choosing a product at the regular price, 142 claimed to check the price before putting the item in their cart. Of an independent random sample of 270 choosing a product at a special price, 185 made this claim. Find a 99% confidence interval for the difference between the two population proportions. www Let Px be the population proportion of shoppers choosing a product at the regular price who claim to check the price before putting it into their cart and let Py be the population proportion of shoppers choosing a product at a special price who claim to check the price before putting it into their cart. The 99% confidence interval is

Supermarket shoppers were observed and questioned immediately after putting an item in their cart. Of a random sample of 230 choosing a product at the regular price, 142 claimed to check the price before putting the item in their cart. Of an independent random sample of 270 choosing a product at a special price, 185 made this claim. Find a 99% confidence interval for the difference between the two population proportions. www Let Px be the population proportion of shoppers choosing a product at the regular price who claim to check the price before putting it into their cart and let Py be the population proportion of shoppers choosing a product at a special price who claim to check the price before putting it into their cart. The 99% confidence interval is

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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