Out of 800 people sampled, 432 use cream in their coffee. Based on this, construct a 98% confidence interval for the true population proportion of people who use cream in their coffee. Give your answers to three decimal places for each part. You may carry the rounding down throughout the problem. Showing work is required. 1. State the value of the estimate of the population proportion. 2. Calculate value of the standard error. 3. Should you use z or t in your confidence interval calculation? Select an answer v 4. Determine the value of z or t that you need to use for your confidence interval, and state it. 5. Calculate the margin of error for your interval. 6. Calculate the 98% confidence interal.
Out of 800 people sampled, 432 use cream in their coffee. Based on this, construct a 98% confidence interval for the true population proportion of people who use cream in their coffee. Give your answers to three decimal places for each part. You may carry the rounding down throughout the problem. Showing work is required. 1. State the value of the estimate of the population proportion. 2. Calculate value of the standard error. 3. Should you use z or t in your confidence interval calculation? Select an answer v 4. Determine the value of z or t that you need to use for your confidence interval, and state it. 5. Calculate the margin of error for your interval. 6. Calculate the 98% confidence interal.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 9PPS
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