Crownfashions

question 129

Multiple Choice

Crownfashions.com wants to estimate the average time that visitors to its website spend browsing the site.In a random sample of 49 visits this week, average browsing time is 13.6 minutes.Assume you know the population standard deviation is 5.2 minutes.Construct an 80% confidence interval estimate of average browsing time for the population of crownfashion.com visitors this week.Report the margin of error indicated by the interval.

• A).95
• B)1.22
• C)3.64
• D)1.57
• E)2.41

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Definitions:

Standard Error

The statistical measure that describes the accuracy with which a sample represents a population, often used in inferential statistics.

Sampling Distribution

The distribution of values in a sample.

Significant Correlation

Significant correlation refers to a statistical relationship between two variables that is unlikely to have occurred by chance, indicating a meaningful association.

Causal Relationship

A relationship between variables in which changes in one variable demonstrably result in changes in another.