Course Introduction to Statistics-DL-B2 Lena Carlos Blanco
Test QUIZ 6
Started 12/15/19 8:07 PM
Submitted 12/15/19 9:44 PM
Status Completed
Attempt Score 90 out of 100 points
Time Elapsed 1 hour, 37 minutes out of 3 hours
Results All Answers, Submitted Answers, Correct Answers, Feedback, Incorrectly Answered
Displayed Questions
Question 1
2.5 out of 2.5 points
Find the indicated probability or percentage for the normally distributed variable.
The volumes of soda in quart soda bottles are normally distributed with a mean of 32.3 oz and
a standard deviation of 1.2 oz. What is the probability that the volume of soda in a randomly
selected bottle will be less than 32 oz?
Selected Answer:
0.4013
Answers: 0.0987
0.5987
0.3821
0.4013
Question 2
2.5 out of 2.5 points
, Use a table of areas to obtain the shaded area under the standard normal curve.
Selected Answer:
0.3788
Answers:
0.3788
0.8106
0.1894
0.6212
Question 3
2.5 out of 2.5 points
Use a table of areas for the standard normal curve to find the required z-score.
Find the z-score for which the area under the standard normal curve to its left is 0.96
Selected Answer:
1.75
Answers: 1.82
-1.38
, 1.75
1.03
Question 4
2.5 out of 2.5 points
Use a table of areas for the standard normal curve to find the required z-score.
Find the z-score for having area 0.09 to its right under the standard normal curve, that is, find z
0.09
Selected Answer:
1.34
Answers: 1.39
1.26
1.45
1.34
Question 5
2.5 out of 2.5 points
Find the indicated probability or percentage for the normally distributed variable.
The diameters of bolts produced by a certain machine are normally distributed with a mean of
0.30 inches and a standard deviation of 0.01 inches. What percentage of bolts will have a
diameter greater than 0.32 inches?
Selected Answer:
2.28%
Test QUIZ 6
Started 12/15/19 8:07 PM
Submitted 12/15/19 9:44 PM
Status Completed
Attempt Score 90 out of 100 points
Time Elapsed 1 hour, 37 minutes out of 3 hours
Results All Answers, Submitted Answers, Correct Answers, Feedback, Incorrectly Answered
Displayed Questions
Question 1
2.5 out of 2.5 points
Find the indicated probability or percentage for the normally distributed variable.
The volumes of soda in quart soda bottles are normally distributed with a mean of 32.3 oz and
a standard deviation of 1.2 oz. What is the probability that the volume of soda in a randomly
selected bottle will be less than 32 oz?
Selected Answer:
0.4013
Answers: 0.0987
0.5987
0.3821
0.4013
Question 2
2.5 out of 2.5 points
, Use a table of areas to obtain the shaded area under the standard normal curve.
Selected Answer:
0.3788
Answers:
0.3788
0.8106
0.1894
0.6212
Question 3
2.5 out of 2.5 points
Use a table of areas for the standard normal curve to find the required z-score.
Find the z-score for which the area under the standard normal curve to its left is 0.96
Selected Answer:
1.75
Answers: 1.82
-1.38
, 1.75
1.03
Question 4
2.5 out of 2.5 points
Use a table of areas for the standard normal curve to find the required z-score.
Find the z-score for having area 0.09 to its right under the standard normal curve, that is, find z
0.09
Selected Answer:
1.34
Answers: 1.39
1.26
1.45
1.34
Question 5
2.5 out of 2.5 points
Find the indicated probability or percentage for the normally distributed variable.
The diameters of bolts produced by a certain machine are normally distributed with a mean of
0.30 inches and a standard deviation of 0.01 inches. What percentage of bolts will have a
diameter greater than 0.32 inches?
Selected Answer:
2.28%
