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
Over [174]
3 years ago
10

A 90% confidence interval is found to be (72,78) what is the margin of error

Mathematics
1 answer:
andrew-mc [135]3 years ago
5 0

Answer:

3

Step-by-step explanation:

i just took the quiz on a p e x!

You might be interested in
Which expression is equivalent to 2x^(2)+11x+5
beks73 [17]

Answer:

(x + 5)(2x + 1)

Step-by-step explanation:

Given

2x² + 11x + 5

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 2 × 5 = + 10 and sum = + 11

The factors are + 10 and + 1

Use these factors to split the x- term

2x² + 10x + x + 5 ( factor the first/second and third/fourth terms )

= 2x(x + 5) + 1 (x + 5) ← factor out (x + 5 from each term

= (x + 5)(2x + 1) ← in factored form

6 0
3 years ago
Add the following using the common denominator method. Show all of your work. <br><br> 2/3 + 2/9
Alekssandra [29.7K]

Answer:

8/9

Step-by-step explanation:

First we need to get both of the fractions to the same denominator.

1. 2/3 + 2/9 = 6/9 + 2/9

Next, we simply just add the fractions.

2. 6/9 + 2/9 = 8/9

8 0
3 years ago
Heights​ (cm) and weights​ (kg) are measured for 100 randomly selected adult​ males, and range from heights of 138 to 190 cm and
mart [117]

Answer:

Best predicted value of y' = 86.16 kg

Step-by-step explanation:

Given,

n = 100

Range of heights = 138 - 190cm

Range of weight = 39 to 150 kg

x' =167.46 cm

y' = 81.44 kg

r = 0.108

p value = 0.285

y = - 105 + 1.08x

Significance level = 0.05

We reject H0 since pvalue, 0.285 is less than significance level of 0.05.

Therefore,

Given height of adult male, x = 177 cm

y = - 105 + 1.08x

The best predicted value of y' =

y' = - 105 + 1.08(177)

y' = 86.16 kg

The best predicted value of y' is 86.16kg

6 0
3 years ago
A car dealership decreased the price of a certain car by 13%. The original price was $45,400.
ira [324]

Answer:

5902

Step-by-step explanation:

Solution: 13% off 45400 is equal to (13 x 13) / 100 = 5902.

5 0
3 years ago
Make 'm' the subject of the formula'k=3m-2
zaharov [31]

Answer:

m =  \frac{k + 2}{3}

Step-by-step explanation:

k = 3m - 2 \\ 3m = k + 2 \\ m =  \frac{k + 2}{3}

4 0
3 years ago
Read 2 more answers
Other questions:
  • The longest side of an acute triangle measures 30 inches. The two remaining sides are congruent, but their length is unknown. Wh
    11·2 answers
  • Write and equation ( and maybe solve) please!
    8·1 answer
  • ............ pls help
    6·2 answers
  • Please Help I dint understand it!!
    9·2 answers
  • If f(x) = 2х2 +1, what is f(x) when x = 3?<br> оооо<br> 19
    15·1 answer
  • a man travels from town X to town Y at an average rate of 50 miles an hour and returns at an average rate of 40 miles an hour he
    12·1 answer
  • An item is priced at $14.55. If the sales tax is 6%, what does the item cost including sales tax?
    8·1 answer
  • <img src="https://tex.z-dn.net/?f=%28m-9%29%28m-3%29" id="TexFormula1" title="(m-9)(m-3)" alt="(m-9)(m-3)" align="absmiddle" cla
    11·1 answer
  • I need helpppppp.....
    9·1 answer
  • Graphing liner equations. please help solve (im a girl)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!