EXAM) WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+ 2026
greater than or equal to 0 - ANSWERS-for any value x of the
random variable, p(x)
variance - ANSWERS-the average of the squared deviations
of the different values of the random variable from the
expected value
standard deviation - ANSWERS-the square root of the
variance is the...
the spread of the values of the random variable from their
expected value - ANSWERS-the variance and standard
deviation measure...
,binomial distribution - ANSWERS-the probability of a
success or failure outcome in an experimental survey that is
repeated multiple times
1. experiment consists of n identical traits; 2. each trial
results in either "success" or "failure"; 3. probability of
success, p, is constant from trial to trial (probability of
failure, q, is 1-p); 4. trials are independent - ANSWERS-4
binomial experiment characteristics
binomial random variable - ANSWERS-if x is the total
number of successes in n trials of a binomial experiment,
then x is a...
forecasts - ANSWERS-poisson distributions are used by
businessmen to make ________ about the number of
customers or sales on certain days or seasons of the years
curve f(x) - ANSWERS-the continuous probability
distribution of the continuous random variable x if the
probability that x will be in a specific interval of numbers is
the...
, probability curve and probability density function -
ANSWERS-other names for a continuous probability
distribution are...
probability - ANSWERS-an area under a continuous
probability distribution is a...
1. there are an infinite number of normal curves (the shape
of any individual normal curve depends on its specific mean
and standard deviation);2. the highest point is over the
mean (also the median and mode);3. the curve is
symmetrical about its mean (the left and right halves of the
curve are mirror images of each other);4. tails of the normal
extend to infinity in both directions (the tail gets closer to
the horizontal axis but never touch it);5. the area under the
normal curve to the right of the mean equals the area under
the normal curve to the left of the mean (the area under
each half is 0.5) - ANSWERS-5 properties of a normal
distribution curve
1. formulate the problem in terms of x values;2. calculate
the corresponding z values and restate the problem in terms
of these z values;3. find the required areas under the
standard normal curve by using the table - ANSWERS-
finding normal probabilities