![kamkam6200](/avatars/43162.jpg)
kamkam6200
15.05.2021 •
Mathematics
If a Variable has a normal distribution with mean 30 and standard deviation 5 find the probability that the variable will be between 25 and 37.
A. 0.77
B. 80
0.72
0.75
Solved
Show answers
More tips
- H Health and Medicine Is it true that working with a computer is harmful to your eyesight?...
- S Sport When is the Champions League final?...
- H Health and Medicine Is Folic Acid a Necessary Vitamin?...
- W Work and Career How to Start Your Own Business: Tips and Recommendations...
- S Society and Politics 10 Tips for Boosting Your Self-Esteem...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
Answers on questions: Mathematics
- M Mathematics Please help me with this...
- M Mathematics Find the absolute maximum and minimum values of the function below. f(x) = x3 − 9x2 + 3, − 3 2 ≤ x ≤ 12 Solution Since f is continuous on − 3 2 , 12 , we can use...
- E English PLEASE HELP!! Click to read I am offering this poem by Jimmy Santiago Baca. Then answer the question. In the poem, which image is compared to a poem? A: An Uncaring...
- M Mathematics Which statement best describes marcos equation...
- S Social Studies Which statement best describes an advantage of indirect democracy over direct democracy?...
- M Mathematics F(x)=3x+5 g(x)=(4x-7)/6 | f(8) = ? fg(x) = ? ff^-1(2) = ?...
Ответ:
P(25 < x < 37) = 0.77
Step-by-step explanation:
Given - If a Variable has a normal distribution with mean 30 and standard deviation 5
To find - find the probability that the variable will be between 25 and 37.
Proof -
Given that,
Mean, μ = 30
S.D, σ = 5
Now,
Now,
P(25 < x < 37)
=![P(\frac{25 - 30}{5} < z < \frac{37 - 30}{5} )](/tpl/images/1326/3850/0d330.png)
= P(1 < z < 1.4)
= P(z < 1.4) - P(z < -1)
= 0.9192 - 0.1587
= 0.7605
≈ 0.77
∴ we get
P(25 < x < 37) = 0.77
Ответ: