This topic contains a solution. Click here to go to the answer

Author Question: Thomas is a shift manager at a local fast food place, and is responsible for quality management. ... (Read 150 times)

lunatika

  • Hero Member
  • *****
  • Posts: 548
Thomas is a shift manager at a local fast food place, and is responsible for quality management. Thomas wants to ensure that each of the frozen hamburger patties that get delivered by the supplier weighs four ounces on average.
 
  Assume that the standard deviation of the weight of hamburger patties is known to be 0.1 ounces. Thomas tells one of his employees that as a shipment comes in, select 20 patties at random and find the average weight for the 20 patties. If the average weight is less than 3.95 ounces, reject the shipment. What is the smallest significance level associated with this decision rule?A) 0.015
  B) 0.008
  C) 0.023
  D) 0.013

Question 2

When we convert normal distributions to the standard normal distribution, we are essentially making them all alike. How is this possible and what are the implications?
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bfulkerson77

  • Sr. Member
  • ****
  • Posts: 331
Answer to Question 1

D

Answer to Question 2

Normal distributions are bell-shaped and symmetric around their means. When a normal population is standardized, every value is replaced by a value equal to the number of standard deviations above or below the mean that particular value is. So in a normal population with mean 10 and standard deviation 2, the value 8 becomes z = -1 and so does the value 6 in a normal population with mean 10 and standard deviation 4. So, all normal populations become related to this one standard normal population. That is why, for every normal population 68.26 fall within 1 standard deviation of the mean, 95.44 fall within 2 and 99.73 fall within 3. The only thing that really matters for a normal distribution are the standardized z values. Once you know how many standard deviations above or below the mean a value in the normal population is, you can always determine that value and any probabilities about that value.





 

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

For a complete list of videos, visit our video library