1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zloy xaker [14]
3 years ago
11

Leah is buying curtains for her bedroom. She wants the curtains to hang from the top of the window to the floor. The window is 4

feet high. The bottom of the window is 2 1/2 feet above the floor how many inches long should leave your curtains be?
Mathematics
1 answer:
mash [69]3 years ago
7 0
78 inches because 4 + 2.5 = 6.5 and 6.5•12= 78
You might be interested in
A College Alcohol Study has interviewed random samples of students at four-year colleges. In the most recent study, 494 of 1000
Vinil7 [7]

Answer:

The 95% confidence interval for the difference between the proportion of women who drink alcohol and the proportion of men who drink alcohol is (-0.102, -0.014) or (-10.2%, -1.4%).

Step-by-step explanation:

We want to calculate the bounds of a 95% confidence interval of the difference between proportions.

For a 95% CI, the critical value for z is z=1.96.

The sample 1 (women), of size n1=1000 has a proportion of p1=0.494.

p_1=X_1/n_1=494/1000=0.494

The sample 2 (men), of size n2=1000 has a proportion of p2=0.552.

p_2=X_2/n_2=552/1000=0.552

The difference between proportions is (p1-p2)=-0.058.

p_d=p_1-p_2=0.494-0.552=-0.058

The pooled proportion, needed to calculate the standard error, is:

p=\dfrac{X_1+X_2}{n_1+n_2}=\dfrac{494+552}{1000+1000}=\dfrac{1046}{2000}=0.523

The estimated standard error of the difference between means is computed using the formula:

s_{p1-p2}=\sqrt{\dfrac{p(1-p)}{n_1}+\dfrac{p(1-p)}{n_2}}=\sqrt{\dfrac{0.523*0.477}{1000}+\dfrac{0.523*0.477}{1000}}\\\\\\s_{p1-p2}=\sqrt{0.000249+0.000249}=\sqrt{0.000499}=0.022

Then, the margin of error is:

MOE=z \cdot s_{p1-p2}=1.96\cdot 0.022=0.0438

Then, the lower and upper bounds of the confidence interval are:

LL=(p_1-p_2)-z\cdot s_{p1-p2} = -0.058-0.0438=-0.102\\\\UL=(p_1-p_2)+z\cdot s_{p1-p2}= -0.058+0.0438=-0.014

The 95% confidence interval for the difference between proportions is (-0.102, -0.014).

7 0
2 years ago
Estimate the difference of 1.9 – 0.7 = ________ by rounding each number to the nearest whole number.
miss Akunina [59]
B 1 since you would round 1.9 to 2 and 0.7 to 1
7 0
3 years ago
Read 2 more answers
How do you solve 4(4+363562-75635)(4)/53
Mice21 [21]

Simple, use PEMDAS and then do your simple  math and then your answer should be 86922.56604

4 0
2 years ago
Write the following fractions in order from smallest to largest 3/10, 13/20, 22/25, 3/5
iren2701 [21]
Your answer from smallest to largest is:

3/10
3/5
13/20
22/25
6 0
3 years ago
You cut out a piece of me, and now I bleed internally
Crank

Answer: huh

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • What it 7,755 divided by 25?
    5·2 answers
  • Slope= -6 y intercept= -3 ??
    10·1 answer
  • PLEASE HELP ME :) !!!!!!
    7·1 answer
  • PLEASE HELP..MATH 8TH GRADE​
    9·2 answers
  • Farmer Joe sprays his crops every harvesting season. Each season he uses 230 lbs of chemicals on his farm. About 5% of the chemi
    14·1 answer
  • The sum of a number and twice the same number is 15
    8·1 answer
  • 2. Why are the triangles congruent?
    6·2 answers
  • X2 - 2xy + y2 when x = 3 and y = 2​
    10·2 answers
  • 5. [Statistical independence] Consider a month consisting of exactly 28 days, split into four weeks of seven days each, such tha
    14·1 answer
  • Setup a trig equation to solve for the angle indicated:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!