3. Sleep apnea is a disorder in which there are pauses in breathing during sleep period...

3. Sleep apnea is a disorder in which there are pauses in breathing during sleep period people with this condition must wake up frequently to breathe. In a sample of 340 people aged 65 and over, 106 of them had sleep apnea. What is the lower bound for the 90% confidence interval for the proportion of those aged 65 and over who have sleep apnea. Round to 3 decimal places.

4. The Nielsen company surveyed 258 of owners of Android phones and found that 215 of them plan to get another Android as their next Phone. What is the lower bound for the 95% confidence interval for the proportion of Android users who plan to get another Android? Round to 3 decimal places.

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Expert Solution

Refer Z-table or use excel function "=NORM.S.INV((1-0.05))" to find the Z-value

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Refer Z-table or use excel function "=NORM.S.INV((1-0.025))" to find the Z-value

orchestra answered 1 year ago

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