In a study conducted in the United Kingdom about sleeping positions, 1000 adults

Question

In a study conducted in the United Kingdom about sleeping positions, 1000 adults in the UK were asked their starting position when they fall asleep at night. The most common answer was the fetal position (on the side, with legs pulled up), with 41% of the normal distribution to find a % confidence interval or the proport of all UK adults who start sleep n is position. Use the fact that the standard error of the estimate s 016 participants saying they start n this position. Use Round your answers to three decimal places The 95% confidence interval is to

Explanation / Answer

SE = 0.016

Z for 95% confidence interval = Z0.025 = 1.96

confidence interval = (p + Z0.025 * SE)

                               = (0.41 + 1.96 * 0.016)

                               = (0.41 + 0.031)

                               = (0.379 , 0.441)

Confidence interval is 0.379 to 0.041

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