Showing all 3 results

Sale!
A machine that fills cans of Mountain Lightning is supposed to put 12 ounces of beverage in each can. The variance of the amount in each can is 0.01.
$2.00$1.00Question: A machine that fills cans of Mountain Lightning is supposed to put 12 ounces of beverage in each can. The variance of the amount in each can is 0.01. The machine is moved to a new location, which has previously been shown to alter the machine settings. Determine whether the variance has changed following the move based on the following sample of the fills of 10 Mountain Lightning cans.
12.18 11.77 12.09 12.03 11.87 11.96 12.03 12.36 12.28 11.85 
Sale!
A random sample of size 12 from a normal population is given below. 69 74 75 76 78 79 81 83 83 85 86 87
$2.00$1.00Question: A random sample of size 12 from a normal population is given below.
69 74 75 76 78 79 81 83 83 85 86 87
a) Someone claimed that s = 10. Does this data set support the claim? Test at a = 0.05.
b) Test if the population mean is 85 using a = 0.05.
c) Find the pvalue of the test 
Sale!
A manufacturer would like to determine if the variance in a product dimension exceeds 10
$3.00$2.00Question:
A manufacturer would like to determine if the variance in a product dimension exceeds 10.
a) State the Hypothesis to show the variance is greater than 10.
b) Choose a level of a Use a= 0.05 for this problem.
c) To test the hypothesis, the manufacturer takes a sample of 18 parts and measure that product dimension. The data appear in the Dimension worksheet of the HW3 data workbook on Moodle. Collect data and calculate necessary statistics to test the hypothesis.
d) Sketch the sampling distribution. Include the critical value and test statistic.
e) Draw a conclusion and report that in the problem context.
f) What is the pvalue for the hypothesis test?
Part 1 2 3 4 5 6 7 8 9 Data 48.3 48.5 54 49.3 48.8 56.6 45.8 55.2 45 Part 10 11 12 13 14 15 16 17 18 Data 52 46.4 51.2 50.4 47.6 45.1 44.8 44.9 56.3