solving problems not by copying answeis question 1 score on last try 2
Search for question
Question
Solving problems, not by copying answeIS.
Question 1
Score on last try: 2 of 2 pts. See Details for more.
Get a similar question
2/2 pts 1 2 Details
A normal distribution has a mean of 122 and a standard deviation of 3. Find the z-
score for a data value of 128.
2
Submit Question
Question 2
Round to two decimal places
2/2 pts 1 2 Details
Score on last try: 2 of 2 pts. See Details for more.
Get a similar question
GPAs at CCSU are normally distributed with a mean of 2.31 and a standard deviation
of 0.48. Find the z-score for a GPA of 2.89.
○ 0.4792
01.021
○ 0.2500
0 1.479
1.208
○ 0.2292
Submit Question :S
ct
Question 3
2/2 pts 12 Details
Score on last try: 2 of 2 pts. See Details for more.
Get a similar question
Adult men have an average height of 69.0 inches with a standard deviation of 2.8
inches. Find the height of a man with a z-score of -0.21. Round your answer to one
decimal place.
68.4
o inches
Show Detailed Solution
Submit Question
Question 4
Score on last try: 2 of 2 pts. See Details for more.
Get a similar question
2/2 pts 1 2 Details
A manufacturer knows that their items have a normally distributed lifespan, with a
mean of 6.7 years, and standard deviation of 1.1 years.
If you randomly purchase one item, what is the probability it will last longer than 8
years?
Round answer to three decimal places
0.119
Submit Question བསཔ་II་ པཱས་པ་དཔ་
Question 5
Score on last try: 2 of 2 pts. See Details for more.
Get a similar question
2/2 pts 11 Details
Assume that the readings at freezing on a batch of thermometers are normally
distributed with a mean of 0°C and a standard deviation of 1.00°C. A single
thermometer is randomly selected and tested. Find P67, the 67-percentile. This is the
temperature reading separating the bottom 67% from the top 33%.
P67
= 0.440
°C
(Round answer to three decimal places)
Submit Question
Question 6
Score on last try: 2 of 2 pts. See Details for more.
Get a similar question
2/2 pts 1 1 Details
A manufacturer knows that their items have a normally distributed length, with a
mean of 12.2 inches, and standard deviation of 1.2 inches.
If one item is chosen at random, what is the probability that it is less than 13.2 inches
long?
0.7967
Submit Question Question 11
2/2 pts 12 Details
Score on last try: 2 of 2 pts. See Details for more.
Get a similar question
The scores on the Accuplacer test and High School GPAs are normally distributed.
The Accuplacer test had a mean of 30 and a standard deviation of 8.
High School GPAs had a mean of 2.9 and a standard deviation of 0.2.
What high school GPA do you need to equal a score of 56 on the Accuplacer test?
Give answer to two decimal places.
3.55
Submit Question
Question 12
2/2 pts 1 2 Details
Score on last try: 2 of 2 pts. See Details for more.
Get a similar question
A manufacturer knows that their items have a normally distributed lifespan, with a
mean of 8.5 years, and standard deviation of 2.6 years.
The 2% of items with the shortest lifespan will last less than how many years?
Give your answer to one decimal place.
3.2
Submit Question t
Question 16
Score on last try: 2 of 2 pts. See Details for more.
Get a similar question
2/2 pts 12 Details
A distribution of values is normal with a mean of 169.9 and a standard deviation of
26.4.
Find the probability that a randomly selected value is less than 222.7.
<
P(X 222.7)
0.9772
Enter your answer as a number accurate to 4 decimal places. Answers obtained using
exact z-scores or z-scores rounded to 3 decimal places are accepted.
Submit Question
Question 17
Score on last try: 2 of 2 pts. See Details for more.
Get a similar question
2/2 pts 1 2 Details
Let X represent the full height of certain species of tree. Assume that X is normally
distributed with a mean of 26.9 feet and a standard deviation of 98.4 feet.
Find the probability that the full height of a randomly selected tree is greater than
194.2 feet.
P(X > 194.2) = 0.0446
Enter your answer as a number accurate to 4 decimal places.
Submit Question