Mathematics, 15.04.2020 04:36 clairajogriggsk
In a survey of 1008 adults, a polling agency asked, "When you retire, do you think you will have enough money to live comfortably or not. Of the 1008 surveyed, 528 stated that they were worried about having enough money to live comfortably in retirement. Construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.
Answers: 3
![CI=\hat p\pm z\sqrt{\frac{\hat p(1-\hat p}{n}}\\\\=0.5238\pm 1.645\times \sqrt{\frac{0.5238\times0.4762}{1008}}\\\\=0.5238\pm0.0259\\\\=[0.4979,0.5497]](/tpl/images/0601/3798/61844.png)
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