A researcher reports that the heights of men aged 53 living in Rapid City, South Dakota, are between 5'7" and 6'0" and that the confidence interval is calculated at the p <.05 level. What does this mean?
a. If the heights of men in Rapid City, South Dakota, do not fall within the confidence interval at least 5% of the time, a type I error has occurred.
b. If a 53-year-old man in Rapid City, South Dakota, is measured, there is a 95% chance that his height will fall in the 5'7" through 6'0" interval.
c. Ninety-five percent of the 53-year-old men living in Rapid City, South Dakota, are between 5'7" and 6'0".
d. The heights of the men in the sample were all between 5'7" and 6'0", and the sample was representative of 95% of the men in town.
ANS: B
When the probability of including the value of the parameter within the interval estimate is known, this is referred to as a confidence interval. Calculating a confidence interval involves the use of two formulas to identify the upper and lower ends of the interval. A confidence interval is actually an estimate.
You might also like to view...
An older client is newly diagnosed with gastroesophageal reflux disease. What education should the nurse give them about this disease and heartburn issues?
1. If symptoms are felt, it is best to lie down. 2. It should not put the older patient at increased risk for cancer. 3. It may cause severe chest pain that mimics cardiac symptoms. 4. It is best to eat three times a day; food restrictions are not necessary.
The nurse is caring for a client with superior vena cava syndrome. The nurse is aware that an appropriate nursing intervention for this condition would be:
a. providing a restful environment b. closely monitoring intake and output c. elevating client's feet and legs d. placing the client in the Sims' position
Which policy or procedure represents strategies that can help nurses make better ethical decisions? Select all that apply
1. The nurse manager requires education on ethics at least once annually. 2. After each end-of-life situation, the nurses have a meeting to discuss the ethical implications. 3. The charge nurse assigns a different nurse to a premature baby every day. 4. Hospital administration starts an ethics committee to make decisions for the nurses. 5. The nurses ask the nurse manager to allow them to discuss difficult situations.
Foodborne illness or "food poisoning" is often categorized as either food infection or food intoxication. Food intoxication is caused by
1. Toxins produced by bacterial growth and chemical contaminants 2. Bacterial, viral, or parasitic invasion of food 3. Overcooking of meat and produce 4. Adding too many spices or ingredients to food