zuai-logo
  • Home

  • Mock Exam

  • Cliffs

  • Talk to ZuAI

  • Request a Feature

zuai-logo
  1. Statistics
FlashcardFlashcardStudy GuideStudy GuideQuestion BankQuestion Bank

Proportions

Question 1
1 mark
college-boardStatisticsAP
1 mark

When calculating a 95% confidence interval for a population proportion, what is the z* value that should be used?

Question 2
1 mark
college-boardStatisticsAP
1 mark

Given a large sample size with minimal expected proportion, which formula alteration for the z-interval is most appropriate when constructing a confidence interval for a population proportion?

Question 3
1 mark
college-boardStatisticsAP
1 mark

What should you check about your sample before using it to create a confidence interval?

Question 4
1 mark
college-boardStatisticsAP
1 mark

Which factor must remain constant when comparing two different percentiles computed using standard normal distributions as part z-scores used constructing percent c.I.s pop.proportions?

Question 5
1 mark
college-boardStatisticsAP
1 mark

In skewed distributions with outliers present that still meet central limit theorem conditions (CLT), what measure can you take during construction of confidence intervals around means rather than medians despite potential robustness concerns?

Question 6
1 mark
college-boardStatisticsAP
1 mark

What should be increased in order to decrease the margin of error when estimating the population proportion of left-handed students at a high school using confidence intervals?

Question 7
1 mark
college-boardStatisticsAP
1 mark

What is the best interpretation of a 95% confidence interval for a population proportion?

Feedback stars icon

How are we doing?

Give us your feedback and let us know how we can improve

Question 8
1 mark
college-boardStatisticsAP
1 mark

If you must apply finite population correction while estimating confidence intervals for small populations, how would this adjustment affect your calculated margin of error?

Question 9
1 mark
college-boardStatisticsAP
1 mark

How close should the initial pilot study estimate used prior to the calculation of margin of errors reflect the true parameter before proceeding to full-scale survey collection efforts?

Question 10
1 mark
college-boardStatisticsAP
1 mark

If the margin of error for a confidence interval is desired to be smaller, while keeping the same level of confidence, what impact does this have on the necessary sample size?