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
garik1379 [7]
3 years ago
6

Slader the internal revenue service claims it takes an average of 3.7 hours to complete a 1040 tax form, assuming th4e time to c

omplete the form is normally distributed witha standard devait of the 30 minutes:
a. What percent of people would you expect to complete the form in less than 5 hours?
b. What time interval would you expect to include the middle 50 % of the tax filers?
Mathematics
1 answer:
Vitek1552 [10]3 years ago
6 0

Answer:

0.9953, 3.3629<x<4.0371

Step-by-step explanation:

Given that slader the internal revenue service claims it takes an average of 3.7 hours to complete a 1040 tax form, assuming th4e time to complete the form is normally distributed witha standard devait of the 30 minutes:

If X represents the time to complete then

X is N(3.7, 0.5) (we convert into uniform units in hours)

a) percent of people would you expect to complete the form in less than 5 hours

=100*P(x

b) P(b<x<c) = 0.50

we find that here

c = 4.0371 and

b = 3.3629

Interval would be

(3.3629, 4.0371)

You might be interested in
How do i turn standard form into slope intercept?
Jlenok [28]
Write it in y= mx+b form. Subtract 5x from both sides to get 4y = -5x + 100. Divide by 4 so the answer would be y= -5/4x + 25.
8 0
2 years ago
Can the sides of a triangle have lengths 1, 7, and 11? Explain
Airida [17]

No

Given 3 sides of a triangle, the sum of any 2 sides must be greater than the third side.

Consider the 3 given sides 1, 7 and 11

7 + 11 = 18 > 1

1 + 11 = 12 > 7

1 + 7 < 11 ⇒ not valid

Hence these sides do not form a triangle


6 0
3 years ago
Need some help on homework thank you
ddd [48]

Answer:

mabye the reflixive prop

Step-by-step explanation:

6 0
3 years ago
How do you do this question?
r-ruslan [8.4K]

Step-by-step explanation:

y = 3 + 8x^(³/₂), 0 ≤ x ≤ 1

dy/dx = 12√x

Arc length is:

s = ∫ ds

s = ∫₀¹ √(1 + (dy/dx)²) dx

s = ∫₀¹ √(1 + (12√x)²) dx

s = ∫₀¹ √(1 + 144x) dx

If u = 1 + 144x, then du = 144 dx.

s = 1/144 ∫ √u du

s = 1/144 (⅔ u^(³/₂))

s = 1/216 u^(³/₂)

Substitute back:

s = 1/216 (1 + 144x)^(³/₂)

Evaluate between x=0 and x=1.

s = [1/216 (1 + 144)^(³/₂)] − [1/216 (1 + 0)^(³/₂)]

s = 1/216 (145)^(³/₂) − 1/216

s = (145√145 − 1) / 216

5 0
3 years ago
Perfect Pizza has 12 toppings listed on their menuHow many ways could customer choose a pizza that contains 4 different toppings
Feliz [49]

Answer:

3

Step-by-step explanation:

i would say 3 different ways because 4 x 3 = 12

Hope this helps!

6 0
2 years ago
Other questions:
  • An artist wants to make alabaster pyramids using a block of alabaster with a volume of 576 cubic inches. She plans to make each
    11·2 answers
  • There are 12 girls on the swim team. They make up 48% of the students on the team. How many boys are on the swim team?
    12·2 answers
  • (2/3 * 2/3)(1/2 * 1/2) <br> (2/3 * 2/3)(1/2 * 1/2) in fraction form
    8·2 answers
  • the length of a rectangle is 13 centimeters less than its width. What are the dimensions of the rectangle if it’s area is 114 sq
    8·2 answers
  • Please help and explain the process
    12·1 answer
  • A motorist is pumping gas into his car at a rate of 5/12 of a gallon every 1/24 of a minute. At this rate, how many gallons of g
    7·1 answer
  • Please answer this thanks
    12·1 answer
  • Lincoln owns a small business selling used books. He knows that in the last week 21
    5·1 answer
  • 4x+7x=?<br> please help me
    15·1 answer
  • WILL MARK AS BRAINLIEST
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!