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
sveticcg [70]
3 years ago
8

Hi, so i have a question and i'm giving away free points so here's the question! If you answer ill put out another question and

give you free points if you get it right :>
1.) Today is Friday. What day of the week is it 80 days from today?

2.) Smart multiplications

(a) 125 x 72

(b) 327 x 35 + 327 x 65

3.) Find the sequence and fill in the blanks

(2, 3), (4, 6), (6, 9), (8, 12) ....
The 8th group is (__, __)
( Last one )
4.) 6 piles of marbles are arranged in a triangle pattern. Each side of the triangle has a total of 9 marbles. Add 1 more marble to one of the piles, so that the total number of marbles on each side remains 9. You are allowed to move the marbles but not take any out.
Mathematics
1 answer:
Shtirlitz [24]3 years ago
8 0

Answer:

1. Saturday

2(a) 10,944

2(b) 32700

3. (16,24)

Step-by-step explanation:

You might be interested in
A statistician calculates that 8% of Americans own a Rolls Royce. If the statistician is right, what is the probability that the
hichkok12 [17]

Answer:

0.007 = 0.7% probability that the proportion of Rolls Royce owners in a sample of 595 Americans would differ from the population proportion by more than 3%

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

A statistician calculates that 8% of Americans own a Rolls Royce.

This means that p = 0.08

Sample of 595:

This means that n = 595

Mean and standard deviation:

\mu = p = 0.08

s = \sqrt{\frac{p(1-p)}{n}} = \sqrt{\frac{0.08*0.92}{595}} = 0.0111

What is the probability that the proportion of Rolls Royce owners in a sample of 595 Americans would differ from the population proportion by more than 3%?

Proportion above 8% + 3% = 11% or below 8% - 3% = 5%. Since the normal distribution is symmetric, these probabilities are equal, and so we find one of them and multiply by 2.

Probability the proportion is less than 5%:

P-value of Z when X = 0.05. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{0.05 - 0.08}{0.0111}

Z = -2.7

Z = -2.7 has a p-value of 0.0035

2*0.0035 = 0.0070

0.007 = 0.7% probability that the proportion of Rolls Royce owners in a sample of 595 Americans would differ from the population proportion by more than 3%

8 0
3 years ago
Evaluate - (2-6)(23).<br> O A. 8<br> O B.<br> 1<br> 8<br> Oc.<br> 1<br> 8<br> D. -8
kumpel [21]

Answer:

-92.

Step-by-step explanation:

2 - 6 is -4.

-4 x 23 is -92.

7 0
3 years ago
Simplify 8.9 – 1.4x + (–6.5x) + 3.4
Aleks [24]

Answer:

-7.9x+12.3

Step-by-step explanation:

8 0
2 years ago
What is the slope-intercept form of the line?
Anna11 [10]

The slope-intercept of the line is

y= -2/3x + 2

Going up 2, left 3

Change in y

------------------

change in x

4 0
3 years ago
What's twenty and fifteen thousandths in standard form HELP PLSSSSS
xeze [42]
20.015

Because there are 3 numbers before a thousand so 3 numbers behind the decimal are the thousandths.
4 0
3 years ago
Other questions:
  • Can a rational number be a irrational number
    13·1 answer
  • a group of 48 employees is taking 11 cars to the annual company picnic if each car will be occupied by 4 or 5 employees what i'd
    5·2 answers
  • Name the 5 subsets of the Real Numbers.
    14·1 answer
  • A quadrilateral with vertices at A(4, –4), B(4, –16), C(12, –16), and D(12, –4) has been dilated with a center at the origin. Th
    8·2 answers
  • You have a jug of milk from which you have to remove one cup milk aside. but you only have a three-cup measuring container and a
    5·1 answer
  • If officer brimberry wrote 16 tickets for traffic violations last week but only 10 tickets this week what is the percent decreas
    14·1 answer
  • The formula for the volume of a right circular cylinder is
    8·1 answer
  • What is the simplest form of of this expression?
    11·1 answer
  • 2
    10·1 answer
  • Bob has $600 in a savings account that earns' 5% annually. The interest is not compounded
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!