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
liq [111]
3 years ago
8

Suppose that a committee is studying whether or not there is excessive time waste in our judicial system. It is interested in th

e mean amount of time individuals spend at the courthouse waiting to be called for jury duty. The committee randomly surveyed 81 people who recently served as jurors. The sample mean wait time was 4 hours with a sample standard deviation of 1.2 hours. (a) Define the random variables X and X in words.
Mathematics
1 answer:
irina1246 [14]3 years ago
8 0

Answer:000

Step-by-step explanation:

You might be interested in
Is .4% = 4/1,000?<br><br>.4% = 4/1,000?
strojnjashka [21]
Yes because 0.4% put into a decimal is 0.004 and the four in in the thousandths place
6 0
3 years ago
Someone help me with my algebra homework please
Alla [95]

Answer:

15

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

5a - 10b = 45

<em>b</em> = 3

<u>Step 2: Solve for </u><em><u>a</u></em>

  1. Substitute in <em>b</em> [Equation]:                                                                                5a - 10(3) = 45
  2. Multiply:                                                                                                             5a - 30 = 45
  3. [Addition Property of Equality] Add 30 on both sides:                                  5a = 75
  4. [Division Property of Equality] Divide 5 on both sides:                                  a = 15
7 0
3 years ago
Read 2 more answers
The value of is between 4.7 and 4.8. Which of the following is a more precise approximation of ?
Nataly_w [17]

Answer: D. between 4.79 and 4.8

Step-by-step explanation:

The square root of 23 (√23) is 4.79583152331. We can obviously eliminate A and B. C and D is left. C is wrong because if we approximate the square root of 23, which is 4.79583152331, we get 4.79. 4.79 > 4.78, so it can't be C. Hope this helps :)

4 0
3 years ago
What is the inequality symbol for 9.6 and square root of 96
Anarel [89]
9.6 is less than the square root of 96. The square root of 96 is roughly 9.8
8 0
4 years ago
A soccer player uses her head to hit a ball up in the air from a height of 2 meters with an initial vertical velocity of 5 meter
ozzi

Answer:

The ball will hit the ground in 1.33 s if no one touches it. The equation has 2 real solutions.

Step-by-step explanation:

The ball will hit the ground when its height is equal to 0 meters, therefore using this value in the expression and solving for "t" will give us the correct solutions.

h = -4.9*t^2 + 5*t + 2\\\\-4.9*t^2 + 5*t + 2 = 0\\\\t_{1,2} = \frac{-5 \pm \sqrt{5^2 - 4*(-4.9)*(2)}}{2*(-4.9)}\\\\t_{1,2} = \frac{-5 \pm \sqrt{64.2}}{-9.8}\\\\t_{1,2} =\frac{-5 \pm 8.0125}{-9.8}\\\\t_1 = \frac{-5 - 8.0125}{-9.8} = 1.33 \text{ s}\\\\t_2 = \frac{-5 + 8.0125}{-9.8} = -0.3 \text{ s}

The ball will hit the ground in 1.33 s if no one touches it. The equation has 2 real solutions.

8 0
3 years ago
Other questions:
  • All swimming equipment is on sale with a 35% discount. A snorkeling set regularly sells for $60. Find the discount.
    10·1 answer
  • Which measurement unit might be used to measure the perimeter of a polyground
    12·1 answer
  • the mass of a ping pong ball is 2.3 grams. how many ping pong balls would it take to equal the mass of earth
    5·1 answer
  • Mr. Roberts sees a rare 1937 penny. The cost of the penny is $210.If he saves $3 each week, will Mr.Roberts have enough money to
    11·2 answers
  • Can someone help me with this please 1/4(5x+16/3)-2/4(3/4x+1/2)=-5.
    15·1 answer
  • In one week 97 cell phones were sold. The following week, 48 more cell phones were sold than the week before. How many cell phon
    13·1 answer
  • Which point is a solution to the equation?
    7·1 answer
  • I need help Ill give brainlyiest
    13·1 answer
  • How many screeches are equal to 20 meows? 20 meows = 12 laughs 3 laughs = 2 purrs 40 purrs = 120 screeches
    15·1 answer
  • Solve the inequality. Enter the answer as an inequality that shows the value of the variable; for example f &gt; 7, or 6 &lt; w.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!