Question
(a) Consider140binomial trials with44successes. Find a 90% confidence interval for the population proportion of successes p . (Round your answers to three decimal places.) lower
(a) Consider140binomial trials with44successes.
Find a 90% confidence interval for the population proportion of successesp. (Round your answers to three decimal places.)
- lower limit
- upper limit
(b) Consider234binomial trials with70successes.
Find a 95% confidence interval for the population proportion of successesp. (Round your answers to three decimal places.)
- lower limit
- upper limit
(c) What is the minimal sample size needed for a 95% confidence interval to have a maximal margin of error of0.1
- 1. if a preliminary estimate forpis0.24?
minimum sample size=
- 2. if there is no preliminary estimate forp?
minimum sample size=
(d) What is the minimal sample size needed for a 99% confidence interval to have a maximal margin of error of0.1
- 1. if a preliminary estimate forpis0.71?
minimum sample size=
- 2. if there is no preliminary estimate forp?
minimum sample size+
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Principles of Auditing and Other Assurance Services
Authors: Ray Whittington, Kurt Pany
19th edition
978-0077804770, 78025613, 77804775, 978-0078025617
