A sample of n = 4 scores has a mean of M = 8 . If one new score with a value of X = 3 is added to the sample, what will be the value for the new mean?
a. M = 7
b. M = 8
c. M = 8.75
d. Cannot be determined with the information provided
A
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Men who experience ongoing stress are at a much higher risk of developing coronary heart disease compared to other men. How is chronic stress believed to contribute directly to heart disease?
A) Stress hormones slow down heart rate, decreasing circulation and allowing plaques to build up. B) Stress overstimulates heart tissue, which leads to damage. C) Stress hormones block the absorption of oxygen into the blood, leading to enlargement of the heart. D) Stress stimulates the immune system's inflammatory response, which leads to the development of plaques.
The period of transition from childhood to adulthood that involves many different domains of development is called __________
a. puberty b. adolescence c. preadulthood d. the teens.