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.

Step-by-step explanation:

The confidence interval for population proportion (p) is given by :_

, where n= sample size

z* = Critical value.

= Sample proportion.

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

As per given , we have

n= 525

By z-table , the critical value for 90% confidence interval : z* = 1.645

Now , 90% confidence interval for the proportion of people who leave one space after a period:

Hence, a 90% confidence interval for the proportion of people who leave one space after a period.

25.2

step-by-step explanation:

2+4x6-8/10= 25.2

which expression represents the approximate length of bc?

step-by-step explanation: