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
Arturiano [62]
3 years ago
12

Construct a​ 95% confidence interval for the population​ mean, mu. Assume the population has a normal distribution. A sample of

25 randomly English majors has a mean test score of 81.5 with a standard deviation of 10.2. A. ​(77.29, 85.71) B. ​(66.35, 69.89) C. ​(56.12, 78.34) D. ​(87.12, 98.32)
Mathematics
1 answer:
blagie [28]3 years ago
3 0

Answer:

reeeeeeeeeeeee

Step-by-step explanation:

You might be interested in
A carpenter is building a rectangular bookcase with diagonal braces across the back as shown the Carpender knows that angle ADC
Rudik [331]
I think I have the diagram right.
Let ADB = x, and then BDC = x+32.
x+x+32 = 90
2x = 58
x = 29 = ADB
so BDC = 61
6 0
3 years ago
The right rectangular prism is made up of 48 cubes. Each cube has an edge length of inch. What is the volume of this prism?
Gnesinka [82]

Given:

  • The right rectangular prism is made up of 48 cubes.
  • Each cube has an edge length of 1/4 inch.

~

To Find:

  • What is the volume of this prism?

~

Solution:

~

<u>Using formula: </u>

~

  • \sf \pmb {Volume  \: of \:  cube =  {(side)}^{3} }

~

Substituting values in the formula:

~

\sf \longrightarrow  \dfrac{1}{4}  \times  \dfrac{1}{4}  \times  \dfrac{1}{4}

\sf \longrightarrow \dfrac{1}{64}  \:  {inch}^{3}

~

Now,

Volume of 48 such cubes = Volume of 1 cube × 48 cubes

~

\sf \longrightarrow \dfrac{1}{64}  \times 48

\sf \longrightarrow \dfrac{48}{64}

\sf \longrightarrow \dfrac{3}{4}  \:  {inch}^{3}

~

Hence,

  • Volume of prism is <u>3/4 inch^3</u>
7 0
3 years ago
Find the image of each polygon with the given vertices after a dilation centered at the origin with the given scale factor. J(2,
MAVERICK [17]

Applying a dilation centered at the origin with scale factor k has the effect of multiplying both coordinates of a point by k:

(x,y)\mapsto (kx,ky)

So, in your case, the coordinates of the points double:

J'=(4,8),\quad K'=(8,8),\quad P'=(6,4)

4 0
3 years ago
Tony buys a washing machine
Lorico [155]

Step-by-step explanation:

£480 = 120% (after adding the 20% VAT).

we want to know how much 100% is.

he do we get from 120% to 100% ?

first the formal long way

£480 = 120%

1% = 120%/120 = 480/120 = £4

100% = 1% × 100 = 4×100 = £400

once you understand this mechanism, you can apply the direct shortcut :

£480 / 1.2 = £400

as a multiplication with 100/120 is the same as a division by 120/100, which is 1.2.

and what we did at the beginning in long form was nothing else than

£480 × 100/120 = 480 × 10/12 = 480 × 5/6 = £400

7 0
2 years ago
Read 2 more answers
What is the value of x is in the solution set of 8x-6&gt;12+2x?​
fiasKO [112]

Answer:

see explanation

Step-by-step explanation:

Given

8x - 6 > 12 + 2x ( subtract 2x from both sides )

6x - 6 > 12 ( add 6 to both sides )

6x > 18 ( divide both sides by 6 )

x > 3

Any value of x greater than 3 will be in the solution set

7 0
3 years ago
Other questions:
  • Write the prime factorization of 90. Use exponents where possible.
    13·1 answer
  • The Hampton Middle School cafeteria goes through a lot of regular and crunchy peanut butter. Currently, they have a total of 520
    12·2 answers
  • Relative humidity (%)= actual moisture content ___________________ x 100 saturation moisture content if the actual moisture cont
    15·1 answer
  • 20% of 60 is? This question was had fr me to answer
    11·2 answers
  • What are the coordinates of the vertex of the parabola described by the equation below? y=7(x+5)^2-4
    9·1 answer
  • A small town decided to get into the holiday spirit during Halloween. Every person in
    15·1 answer
  • Graph the image of parallelogram EFGH after a translation 9 units left and 1 unit up.​
    8·2 answers
  • Claudia spends $2.15 day for lunch.Her cafeteria lunch account has a balance of 48.00.Which equation can be used to determine th
    6·1 answer
  • Solve for n. (7^2)^4 = n^8
    10·1 answer
  • What is the area of this figure? 3ft 3ft 3ft 11ft
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!