promcafee8788
22.12.2019 •
Mathematics
Anormal distribution has a mean of 143 and a standard deviation of 12.7.
what is the z-score of 165?
answers:
1.62
1.73
1.87
2.04
Solved
Show answers
More tips
- H Health and Medicine How Did Inna Lose Weight on Dom 2?...
- H Health and Medicine Coughing: Causes, Types, and Treatment Methods...
- H Health and Medicine How to Treat the Flu: A Comprehensive Guide...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
Answers on questions: Mathematics
- M Mathematics Which of these points lies on the graph of y=4log5(x)+2...
- M Mathematics What is the area of this circle? Hint: use the formula A = pi x r x r. *...
- M Mathematics When making the adjustment for prepaid insurance, instead of writing off only the time that has passed the entire policy was written off.this would: a. overstate the assets b. overstate...
- M Mathematics 5ft and 12ft What is the length of the hypotenuse? feet...
- M Mathematics Which function is represented by the graph...
Ответ:
z-score for a value of 165 is + 1.73 times the standard deviation
The correct answer is B. 1.73
Step-by-step explanation:
1. Let's review the information given to us to answer the question correctly:
Mean of the normal distribution = 143
Standard deviation = 12.7
2. What is the z-score of 165?
Let's recall that z-score in a normal distribution, positive or negative, is the number of times of the standard deviation a certain element is from the mean. If the element is below the mean, then the z-score is negative and if it's above the mean, then the z-score is positive.
Therefore, 165 will have the following z-score:
165 - 143 = 22 and it's above the mean.
Now, we calculate the z-score, using the value of the standard deviation this way:
22/12.7 = 1.73
z-score for a value of 165 is + 1.73 times the standard deviation
The correct answer is B. 1.73
Note: Same answer to question 14270010, already answered by me today.
Ответ:
Greater
Step-by-step explanation:
Because x-3 must be greater or equal zero and x must be not equal -2