An index that is a standardized measure used in observing infants over time is approximately normal with a mean of 96 and a standard deviation of 10. a) Using the empirical rule, approximately what percent of infants have an index score between 86 and 126?
b) Using the appropriate table, what proportion of infants have an index score of between 90 and 100?
c) What index score is greater than 33% of the population index scores?
d) What index score is the 89th percentile?

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.

yes. we do proportions in probabilities.

answer: 1 + 1 = 11

step-by-step explanation: