28. The expected( mean) life of a particular type of light bulb is 1,000 hours with a standard deviation of 50 hours. The life of this bulb is normally distributed. What is the probability that a randomly selected bulb would last fewer than 940 hours
29. The mean life of a particular brand of light bulb is 1200 hours and the standard deviation is 75 hours. Tests show that the life of the bulb is approximately normally distributed. It can be concluded that approximately 68 % of the bulbs will last between _______.
30. A market researcher is interested in determining the average income for families in San Mateo County, California. To accomplish this, she takes a random sample of 300 families from the county and uses the data gathered from them to estimate the average income for families of the entire county. This process is an example of _______.
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QNT 561 Week 1 Assignment Statistics Concepts and Descriptive Measures Instructions( Consumer Food)
Purpose of Assignment
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The purpose of this assignment to orient students to the key concepts in statistics. This assignment will introduce students to the language of statistics. Students will also get a chance to warm-up on evaluating some basic descriptive statistics using Excel ® prior to the course start.
Assignment Steps This assignment has an Excel dataset spreadsheet attached.
Resource: Microsoft Excel, Statistics Concepts and Descriptive Measures Data Set