An educator wants to construct a 90% confidence interval for the true proportion of California school children who are proficient in reading. Suppose that of a simple random sample of 700 California school children, 70% were proficient in reading. We are interested in the number that were proficient in reading. a) what parameter are we estimating? Select an answer b) What is the point estimate of that parameter? Select an answer ✓ c) What is a success for this problem? Select an answer

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An educator wants to construct a 90% confidence interval for the true proportion of California school
children who are proficient in reading. Suppose that of a simple random sample of 700 California school
children, 70% were proficient in reading. We are interested in the number that were proficient in reading.
a) what parameter are we estimating? Select an answer ✓
b) What is the point estimate of that parameter? Select an answer ✓
c) What is a success for this problem? Select an answer
d) How many successes were there?
e) Find the margin of error for a 90% confidence interval, rounded to the 5th. Use your T-table for this.
f) Round to the fourth.
We are 90% confident that the true proportion of California school children that are proficient in reading is
between
and
Transcribed Image Text:An educator wants to construct a 90% confidence interval for the true proportion of California school children who are proficient in reading. Suppose that of a simple random sample of 700 California school children, 70% were proficient in reading. We are interested in the number that were proficient in reading. a) what parameter are we estimating? Select an answer ✓ b) What is the point estimate of that parameter? Select an answer ✓ c) What is a success for this problem? Select an answer d) How many successes were there? e) Find the margin of error for a 90% confidence interval, rounded to the 5th. Use your T-table for this. f) Round to the fourth. We are 90% confident that the true proportion of California school children that are proficient in reading is between and
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