![julionavedo21](/avatars/40700.jpg)
julionavedo21
13.02.2020 •
Mathematics
Which statement is true of the interval from x
-
to x = -1?
he graph shows the distance Kathy traveled to
A.
B.
That piece of the graph is nonlinear.
That piece of the graph is lineal
C.
D.
That piece of the graph is decreasing.
That piece of the graph is constant.
Solved
Show answers
More tips
- C Computers and Internet Can You Insert a Regular SIM Card into an iPad? Let s Find Out...
- F Food and Cooking Лечо: вкусное и простое блюдо для любой кухни...
- H Health and Medicine Relieving Swelling in Legs: Causes and Ways to Alleviate the Symptom...
- S Style and Beauty How to Get Rid of a Bruise: Tips and Tricks...
Answers on questions: Mathematics
- M Mathematics Suppose you rotate a rectangle about an axis parallel to its long edge, but not touching any part of the rectangle. What best describes the solid formed? ANSWERS: A cylinder with an...
- M Mathematics A shape drawn on a square grid. more than one of the words listed can describe the shape select the words that can describe...
- M Mathematics Each side of a fair, six-sided die has a certain number of dots on it, 1,2,3,4,5, or 6. The die is rolled by a board game player as part of their turn. Identify the correct experiment,...
- M Mathematics James and Cameron are watching a film. They pause it with one fifth left to watch. What is the ratio of how much they have watched to how much they have left to see?...
- M Mathematics A bakery needs to make 7 batches of muffins before opening in 4 hours. Each batch of muffins takes 2/3 hour to bake. Will the bakery have enough time to bake 7 batches of muffins?...
- M Mathematics Make P the subject in the formula A = P(1+r)T...
- M Mathematics A shop advertises 10% off its prices in a sale. A book is £6.30 in the saleHow much was it before the price reduction?...
- M Mathematics Shawn is collecting money from student’s at his school for a charity. the table gives the ratios of the number of students who have donated and the amount of money he has collected...
- M Mathematics A population of monkeys tail lengths is normally distributed with a mean of 25 cm with a standard deviation of 8 cm. I am preparing to take a sample of size 256 from this population,...
- M Mathematics Let μ denote the true average radioactivity level(picocuries per liter). The value 5 pCi/L is considered thedividing line between safe and unsafe water. Would you recommend testing...
Ответ:
(a) The sample variance is 16.51
(a) The sample standard deviation is 4.06
Step-by-step explanation:
Given
Solving (a); The sample variance.
First, calculate the class midpoints.
This is the mean of the intervals.
i.e.
So, the table becomes:
Next, calculate the mean
Next, the sample variance is:
So, we have:
The sample standard deviation is: