The Amount of Time Required for an Oil and Filter

question 7

Short Answer

The amount of time required for an oil and filter change on an automobile is normally distributed with a mean of 45 minutes and a standard deviation of 10 minutes.A random sample of 16 cars is selected.90% of the sample means will be greater than what value?

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Definitions:

Purchase Histories

Records of an individual's or organization's past purchases, used for analyzing buying behavior or trends.

Sentiment Mining

Data gathered by evaluating customer comments posted through social media sites such as Facebook and Twitter.

Quantitative Research

Structured responses that can be statistically tested to confirm insights and hypotheses generated via qualitative research or secondary data.

Primary Data

Data collected to address specific research needs.