Mathematics, 04.11.2020 18:20 chloeboo
A software developer wants to know how many new computer games people buy each year. Assume a previous study found the variance to be 1.44. She thinks the mean is 6 computer games per year. What is the minimum sample size required to ensure that the estimate has an error of at most 0.15 at the 99% level of confidence
Answers: 1
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![n = [\frac{Z_{\frac{\alpha }{2} } * \sigma }{E} ] ^2](/tpl/images/0866/6237/a50a9.png)
![n = [\frac{2.58 * 1.2 }{0.15} ] ^2](/tpl/images/0866/6237/93e22.png)
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A software developer wants to know how many new computer games people buy each year. Assume a previo...
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