BUAL 2650 Exam 1 Questions & Answers Latest Update.
BUAL 2650 Exam 1 Questions & Answers
Latest Update.
What is quantitative value that represents the outcomes from an experiment? - ✔✔✔-
Random Variable
What are the 2 kinds of random variables? - ✔✔✔-discrete (countable) and continuous
(decimals)
What is the most common type of continuous probability distribution? - ✔✔✔-normal
distribution
What are some other names for a continuous probability distribution? - ✔✔✔-
probability curve and probability density function (pdf)
What is the total area under the curve if f(x) always equal to? - ✔✔✔-1 or 100%
What is an area under a continuous probability distribution? - ✔✔✔-a probability
How many types of normal curves are there? - ✔✔✔-an infinite amount
What does the shape of any individual normal curve depend on? - ✔✔✔-its specific
mean and standard deviation (also median and mode)
What is the highest point over? - ✔✔✔-the mean, median, mode
®™
, BUAL 2650 Exam 1 Questions & Answers Latest Update.
Is the normal curve symmetric? - ✔✔✔-yes (left and right are mirror images)
What does a larger standard deviation do to a curve? - ✔✔✔-makes it shorter and wider
Do the tails of a normal curve ever touch the horizontal axis? - ✔✔✔-no
What percent of the area under the normal curve is within 1 standard deviation to the
left and right? - ✔✔✔-68.26
What percent of the area under the normal curve is within 2 standard deviation to the
left and right? - ✔✔✔-95.44
What percent of the area under the normal curve is within 3 standard deviation to the
left and right? - ✔✔✔-99.73
How do you calculate a z-score? - ✔✔✔-(value-mean)/standard deviation
What is the difference between x and z? - ✔✔✔-x is normal distribution where z is
standard normal distribution
What is cumulative probability? - ✔✔✔-means less than, the left side under curve
What must you do to find probability to the right of a Z score? - ✔✔✔-1 - value from Z
table
P (z< 2) - ✔✔✔-0.9772
®™
BUAL 2650 Exam 1 Questions & Answers
Latest Update.
What is quantitative value that represents the outcomes from an experiment? - ✔✔✔-
Random Variable
What are the 2 kinds of random variables? - ✔✔✔-discrete (countable) and continuous
(decimals)
What is the most common type of continuous probability distribution? - ✔✔✔-normal
distribution
What are some other names for a continuous probability distribution? - ✔✔✔-
probability curve and probability density function (pdf)
What is the total area under the curve if f(x) always equal to? - ✔✔✔-1 or 100%
What is an area under a continuous probability distribution? - ✔✔✔-a probability
How many types of normal curves are there? - ✔✔✔-an infinite amount
What does the shape of any individual normal curve depend on? - ✔✔✔-its specific
mean and standard deviation (also median and mode)
What is the highest point over? - ✔✔✔-the mean, median, mode
®™
, BUAL 2650 Exam 1 Questions & Answers Latest Update.
Is the normal curve symmetric? - ✔✔✔-yes (left and right are mirror images)
What does a larger standard deviation do to a curve? - ✔✔✔-makes it shorter and wider
Do the tails of a normal curve ever touch the horizontal axis? - ✔✔✔-no
What percent of the area under the normal curve is within 1 standard deviation to the
left and right? - ✔✔✔-68.26
What percent of the area under the normal curve is within 2 standard deviation to the
left and right? - ✔✔✔-95.44
What percent of the area under the normal curve is within 3 standard deviation to the
left and right? - ✔✔✔-99.73
How do you calculate a z-score? - ✔✔✔-(value-mean)/standard deviation
What is the difference between x and z? - ✔✔✔-x is normal distribution where z is
standard normal distribution
What is cumulative probability? - ✔✔✔-means less than, the left side under curve
What must you do to find probability to the right of a Z score? - ✔✔✔-1 - value from Z
table
P (z< 2) - ✔✔✔-0.9772
®™
