Question 1
Solve the problem. Round your answer to one decimal place unless otherwise indicated.
Ten apples of a particular variety are selected at random and weighed. The weights (in ounces) are as follows:
8.5, 7.8, 8.1, 6.9, 7.4, 6.1, 7, 8.6, 8.3, 7.9
Estimate the mean weight of all apples of this variety.
◦ It is not possible to estimate the population mean from this sample data
◦ 7.8 ounces
◦ 7.7 ounces
◦ 8.0 ounces
Question 2
Solve the problem. Round your answer to one decimal place unless otherwise indicated.
A long-distance phone company wishes to estimate the mean duration of long-distance calls originating in California. A random sample of 15 long-distance calls originating in California yields the following call durations, in minutes.
Use the data to obtain an estimate of the mean call duration for all long-distance calls originating in California.
◦ 14.9 minutes
◦ 14.6 minutes
◦ 14.4 minutes
◦ 15.2 minutes
Problem Solving
Feng Mengbo, Long March: Restart.
Metric conversion using the place value chart.
Human activity has released carbon from sequestration in long-term reservoirs
Solution to Exponent Law Problem
Solve the system to find x and y