Question 30 of 40 What is the midpoint of a line segment with the endpoints (-4,-3) and (7,-5)?
A. (1.5,-4)
B. (-3.5, 1)
C. (1.-3.5)
D. (-4,1.5)
SUBMIT
plss help!

Solved

Show answers

Ответ:

ily50

15.05.2021

Mathematics

The answer is "(27.030,29.770)"

Step-by-step explanation:

$(\bar{x}) = 28.4$

(n)= 49

$(\sigma) = 6$

$(CI) = \bar{x}\pm z^*_{\frac{\alpha}{2}} \frac{\sigma}{\sqrt{n}}$

$z^*_{\frac{\alpha}{2}}\ for \ 89\%\ confidence = 1.598 \\\\\text{Using z table }\\\\ NORM.S.INV(1-\frac{(1-0.89)}{2})$

$CI = 28.4 \pm 1.598 \times \frac{6}{\sqrt{49}}=(27.030,29.770)$

0,0(0 оценок)

Ask your question to the AI advisor

Ai-bot is an expert in any field and is the perfect companion for reliable and useful answers and advice on a variety of topics, including science, history, technology, art, sports, health, culture and more.

Ask your question

More tips

H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
L Leisure and Entertainment What to Bring on a Hike? Essential Items to Pack for a Safe and Enjoyable Adventure...
L Leisure and Entertainment Couchsurfing: A New Way to Travel...
S Style and Beauty Autotanning: Harmful or Safe?...
F Food and Cooking 10 Ideas for a Wedding Anniversary Gift...
H Health and Medicine How to Reduce Sweating in the Heat and Beyond: Say Goodbye to Excessive Sweat...
F Food and Cooking Do Aphrodisiacs Really Work? Separating Fact from Fiction...
H Health and Medicine What to Eat to Lose Weight?...
A Animals and plants How to Teach Your Parrot to Talk?...
H Health and Medicine How to Improve Your Posture?...

Answers on questions: Mathematics

M Mathematics Write the percent that shows how much of the box is shaded in? question is it 19%?...
M Mathematics Question 2 Answer the following questions to identify the reflected figure from question 1 A A A B B B image 1 image 2 image 3 Part A Can image 1 be the reflected figure from...
M Mathematics If i have an average of 94% and i make an 80 on a test(60%weight) what is my new average...
M Mathematics Using a reference triangle, find the exact value of the expression: sin(cos-1 (1- x))...
M Mathematics describe at least two similarities between constructing a perpendicular line through a point on a line and constructing a perpendicular through a point off a line...
M Mathematics Write a formula for the nth term of the following geometric sequence. 5, 15, 45, 135, ... HELP , i need this asap...
M Mathematics 45 is what percent of 9 i have to show work...
M Mathematics The table below shows the prices for different items at a bakery. Bakery Prices Dessert Price (in dollars) Cookie 0.33 Pretzel 0.97 Cupcake 1.06 Cami buys 1 cupcake, 2 cookies,...
M Mathematics Hey can yall help me with math question please 1. Find the value of k if (x- 1) is a factor of x3+4x2+k x -6 and also find other factor of the expression 2. One of the factors...
M Mathematics Which formula is need to use with the sin cos or toa...

Ask an AI advisor a question

I want advice

Question 30 of 40 What is the midpoint of a line segment with the endpoints (-4,-3) and (7,-5)? A. (1.5,-4) B. (-3.5, 1) C. (1.-3.5) D. (-4,1.5) SUBMIT plss help!