MAT308 Assignment Problems Complete Solution
In this assignment you may use your book, your notes and your calculator. SHOW YOUR WORK WHERE STATED TO DO SO TO RECEIVE FULL CREDIT. Round all decimal answers to 4 decimal places.
Consider the data below for questions 3--4.
3. What number best represents the 25th percentile?
4. Prove or disprove the existence of outliers.
Number of Days Absent per Student, Mr. Steven’s 6th grade class
7 5 12 3 0 5 13 12 5 0 6 38
Consider the following information for questions 19-21. Construct a 95% confidence interval for the mean.
The president of a small community college wishes to estimate the average distance commuting student’s travel to the campus. A SRS of 12 students yielded the following distances in miles: 27,35,33,30,39,25,38,22,27,37,33,40.
Consider the following information for questions 23-25.
Each bottle of fruit juice from a small manufacturing plant is supposed to contain exactly 12 fluid ounces of juice. Susan is in charge of quality control and decided to test this claim by gathering a SRS of 30 bottles. She will recalibrate the machinery if the average amount of juice per bottle differs from 12 fluid ounces at the 1% level of significance. Her sample of 30 bottles has an average of 11.92 fluid ounces and a sample standard deviation of 0.26 fluid ounces. Conduct a hypothesis test to determine if the machinery needs recalibrated.
Consider the following information for questions 26-27.
A restaurant claims that the standard deviation in the length of serving times is less than 2.9 minutes. A disgruntled customer believes that the standard deviation is more than 2.9 minutes. He takes a random sample of 23 serving times, which has a standard deviation of 3.5 minutes. At α = 0.10, is there enough evidence to support the customer’s claim? Assume the population is normally distributed.
Consider the data below for questions 29-30.
High School GPA 3.5 2.5 4.0 3.8 2.8 1.9 3.2 3.7 2.7 3.3
First-Year College GPA 3.3 2.2 3.6 3.7 3.3 2.0 3.1 3.4 2.3 3.1
MAT308 Assignment Problems Complete Solution
A survey should be developed which is unbiased and sample should be taken using simple random sampling method. In simp...
A+ - Thank you!
Thanks for the positive feedback!