Eric is studying people's typing habits. He surveyed 525 people and asked whether they leave one space or two spaces after a period when typing. 440 people responded that they leave one space. Create a 90% confidence interval for the proportion of people who leave one space after a period. Round your results to four decimal places.

(0.8115, 0.8645)

Step-by-step explanation:

Let p be the proportion of people who leave one space after a period.

Given:  Sample size : n= 525

Number of people responded that they leave one space. =440

i.e. sample proportion:

z-score for 90% confidence level : 1.645

Formula to find the confidence interval :

Hence, a 90% confidence interval for the proportion of people who leave one space after a period: (0.8115, 0.8645)

right

step-by-step explanation:

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step-by-step explanation:

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