Still overwhelmed by exam stress? You've come to the right place!
We know exam season has you totally swamped. To support your studies, access Gold Membership for FREE until December 31, 2025! Normally £29.99/month. Just Log In to activate – no strings attached.
Let us help you ace your exams efficiently!
Questions
STAT 1450.02 SP2025 (28132) Checkpoint 18.4
Single choice
When determining the minimum sample size for a specified margin of error, ___________ the standard deviation will increase the sample size
View Explanation
Standard Answer
Please login to view
Approach Analysis
The question asks about how the standard deviation affects the minimum sample size for a specified margin of error.
In a typical proportion or mean confidence interval framework, a larger standard deviation (or standard error) makes the estimat......Login to view full explanationLog in for full answers
We've collected over 50,000 authentic exam questions and detailed explanations from around the globe. Log in now and get instant access to the answers!
Similar Questions
Imagine that your friend James has just taken up the habit of smoking cigars because he thinks it makes him look cool. You are concerned about the detrimental effects of smoking on his health, and you raise that concern to him. James gets a bit annoyed with your criticism and says, "My grandfather smoked cigars, and he lived to be 100!" You might point out that a major problem with his argument involves
Compute the sample size needed to construct a 95% Confidence Interval for a proportion. Use a desired margin of error E=0.047. To find the sample size round up the value obtained from this formula: 𝑛 = 0.25 × ( 𝑧 𝛼 2 𝐸 ) 2 (Note: When computing the critical value 𝑧 𝛼 / 2 that is used in this formula, round it to two decimal places before you plug it into the formula) c07.p063.q002.r002
Compute the sample size needed to compute a 98% Confidence Interval for a mean. Use a desired margin of error E=1.1 and an estimated standard deviation of 𝜎 = 6.2. To find the sample size round up the value obtained from this formula: 𝑛 = ( 𝜎 × 𝑧 𝛼 2 𝐸 ) 2 (Note: When computing the critical value 𝑧 𝛼 / 2 that is used in this formula, round it to two decimal places before you plug it into the formula) c07.p062.q002
In a manufacturing process, we are interested in measuring the average length of a certain type of bolt. Past data indicate that the population standard deviation is .25 inches. How many manufactured bolts should be sampled in order to make us 95 percent confident that the sample mean bolt length is within .02 inches of the true mean bolt length?
More Practical Tools for International Students
Making Your Study Simpler
To make preparation and study season easier for more international students, we've decided to open up Gold Membership for a limited-time free trial until December 31, 2025!