> Next question Get a similar question You can retry this question below A smart phone manufacturer is interested in constructing a 99% confidence interval for the proportion of smart phones that break before the warranty expires. 86 of the 1649 randomly selected smart phones broke before the warranty expired. Round answers to 4 decimal places where possible. a. With 99% confidence the proportion of all smart phones that break before the warranty expires is between 0.0380 and 0.0663 b. If many groups of 1649 randomly selected smart phones are selected, then a different confidence interval would be produced for each group. About 1 x percent of these confidence intervals will contain the true population proportion of all smart phones that break before the warranty expires and about percent will not contain the true population proportion. Question Help: Video Written Example Message instructor Submit Question Jump to Answer lock F2 2 W N 809 F3 # 3 888 E R X C MacBook Air % 85 F5 6 F7 FO &7 8 $00