« previous next »

Author Question: A sample of 60 students from a large university was taken. The average age in the sample was 22 ... (Read 104 times)

cagreen833

  • Hero Member
  • *****
  • Posts: 544
on: Jun 24, 2018
A sample of 60 students from a large university was taken. The average age in the sample was 22 years with a standard deviation of 6 years. Construct a 95 confidence interval for the average age of the population.

Question 2

A control chart that is used to monitor the variation of the measurements in a sample is
 a. a p chart.
 b. an X chart.
 c. an R chart.
 d. an np chart.


cam1229

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jun 24, 2018
Answer to Question 1

20.45 to 23.55 years

Answer to Question 2

c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Several species of squirrels have melanistic phases. In large parts of United States and Canada, the Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
Erythrocytes contain large amounts of the oxygen-transporting protein Erythrocytes contain large amounts of the oxygen-transporting protein
Ardipithecus kadabba has large canine teeth that are only slightly smaller than those of living apes Ardipithecus kadabba has large canine teeth that are only slightly smaller than those of living apes
Bell Curve for Intelligence IQ scores for a population-based sample usually fall into this kind of Bell Curve for Intelligence IQ scores for a population-based sample usually fall into this kind of
What type of errors are these: calling only large dogs a dog and calling a dog a kitty? What type of errors are these: calling only large dogs a dog and calling a dog a kitty?
Anatomy of the Large Intestine (colon) Anatomy of the Large Intestine (colon)
Video: Action potentials - electrical characteristics and generation

For a complete list of videos, visit our video library