A poll asked 1,036 adults, "If purchasing a used car made certain upgrades or features more affordable, what would be your preferred luxury upgrade?" The results indicated that 9% of males and 13% of females answered window tinting.

The poll description did not state the sample sizes of males and females. Suppose that both samples were518

and that 46 of 518 males and 69 of 518 females reported window tinting as their preferred luxury upgrade of choice.

a. Construct a 90% confidence interval estimate of the population proportion of males who said that window tinting would be their favorite upgrade.

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(Round to four decimal places as needed.)