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Question 6, 8.2.8
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In a newspaper’s survey of 467 people, said that we should replace passwords with biometric security, such as fingerprints. The accompanying Statdisk display results from a test of the claim that half of us say that we should replace passwords with biometric security. Use the normal distribution as an approximation to the binomial distribution. Use the display and a 005 significance level to complete parts (a) through (e).
Sample proportion: 0.5182013
Test Statistic z: 0.7867
Critical z:
P-vatre 0.4315
a. Is the test two-tailed, lef-tailed, or night-tailed?
Choose the correct answer below.
nvo-tailed
night-tailed
left-tailed
b. What is the test statistic?

(Round to two decimal places as needed.)

Ask by Ellis Malone. in the United States
Mar 21,2025

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(a) The test is two-tailed.
(b) The test statistic is .

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Mind Expander

In a survey of public opinion on security measures, researchers often employ statistical testing to validate claims, including the popular debate around replacing passwords with biometrics. This conversation taps into historical advancements in technology—from the humble beginnings of passwords in the early days of computing to cutting-edge biometric systems today, making us ponder how far we’ve come!
In real-world applications, statistical tests like the one you’re working on guide important decisions. Businesses must often choose between traditional methods and innovative alternatives. For instance, understanding public sentiment on biometric security can shape how companies design their authentication processes, impacting everything from online banking to personal devices. So, your analysis here isn’t just an academic exercise; it has tangible implications for security in our digital lives!

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