milkshakegrande101
19.08.2019 •
Mathematics
The number of books borrowed from a library each week follows a normal distribution. when a sample is taken for several weeks, the mean is found to be 190 and the standard deviation is 30. what is the percentage of the chance that more than 250 books were borrowed in a week?
a. 99.7
b. 95
c. 13.5
d. 2.5
Solved
Show answers
More tips
- F Family and Home What is Most Important in Men s Lives?...
- H Health and Medicine Why Wearing a Back Brace Can Be Beneficial During Back Strain?...
- S Sport When and Where Will the 2014 World Cup be Held?...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
Answers on questions: Mathematics
- M Mathematics Which expression is equivalent to 1/4y−1/2? 1/4(y−1/2) 1/4(y−2) −1/4(y−12) −1/4(y−2) Please help ASAP. 100 points and brainless!!!...
- M Mathematics Suppose that a hotel owner estimates the probability that a customer booking a hotel room pays in advance (C1) is 0.35 and their probability of paying after check-out (C2)...
- M Mathematics A cell phone company offers two texting plans to its customers. The monthly cost, y dollars, of plan A is y =0.16x +9, where x is the number of texts. The cost of plan...
- M Mathematics A company makes regular and tall boxes. The base area of each box is 5 ft. The volume of the regular box is 40 ft. The tall box is 3 ft taller. What is the volume of the...
- M Mathematics The value of 10+6/2+3 is 7. True or false...
- M Mathematics PLEASE PLEASE PLEASE HELPPP PLS...
- M Mathematics Can someone help me plzz...
- M Mathematics What is n squared plus 2, find first 4terms...
- M Mathematics PLEAS EHLPE BESTIES Look at the venn diagram. How many people like vanilla only? 1 point vanilla 8 4 chocolate Your answer...
- M Mathematics Jane, Elodie et Thibault ont participé à la cueillette des pommes pendant une quinzaine de jours au mois d août. Ils ont gagné 1650 euros à eux trois. Une caisse d environ...
Ответ:
2 SD away from mean is 95% of data.
3 SD away from mean is 99.7% of data.
1 SD away:
190+30=220
2 SD away:
220+30=250
This shows we are on the outer 5 percent of the normal distribution.
Since you said "more", that means we only look at the right side of your 5%, which is only 2.5%
answer is D, 2.5%
Ответ:
B on edge
Step-by-step explanation:
I just took it.