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
cricket20 [7]
3 years ago
12

How were the numbers 1 10 100 and 1000 written by romans?

Mathematics
1 answer:
Arturiano [62]3 years ago
8 0
1 --  I
10 -- X
100 -- C
1000 -- M 
You might be interested in
Is 5/16 smaller than 3/5
zheka24 [161]
Yes 5/6 is smaller than 3/5
4 0
3 years ago
Read 2 more answers
2. The National Safety Council routinely analyzes the benefit of seat belt use on driver safety. Their data showed that among 28
JulijaS [17]

Answer:

We conclude that there is difference in the proportion of deaths between the 2 groups.

Step-by-step explanation:

We are given that among 2823 drivers not wearing seat belts, 31 died as a result of injuries, and among 7765 drivers wearing seat belts 16 were killed.

Let p_1 = <u><em>proportion of deaths when drivers were not wearing seat belts.</em></u>

p_2 = <u><em>proportion of deaths when drivers were wearing seat belts.</em></u>

So, Null Hypothesis, H_0 : p_1=p_2      {means that there is no difference in the proportion of deaths between the 2 groups}

Alternate Hypothesis, H_A : p_1\neq p_2     {means that there is difference in the proportion of deaths between the 2 groups}

The test statistics that would be used here <u>Two-sample z test for proportions;</u>

                          T.S. =  \frac{(\hat p_1-\hat p_2)-(p_1-p_2)}{\sqrt{\frac{\hat p_1(1-\hat p_1)}{n_1}+\frac{\hat p_2(1-\hat p_2)}{n_2} } }  ~ N(0,1)

where, \hat p_1 = sample proportion of deaths when drivers were not wearing seat belts = \frac{31}{2823} = 0.011

\hat p_2 = sample proportion of deaths when drivers were wearing seat belts = \frac{16}{7765} = 0.002

n_1 = sample of drivers not wearing seat belts = 2823

n_2 = sample of drivers wearing seat belts = 7765

So, <u><em>the test statistics</em></u>  =  \frac{(0.011-0.002)-(0)}{\sqrt{\frac{0.011(1-0.011)}{2823}+\frac{0.002(1-0.002)}{7765} } }

                                       =  4.438

The value of z test statistics is 4.438.

<u>Now, at 5% significance level the z table gives critical values of -1.96 and 1.96 for two-tailed test.</u>

Since our test statistic doesn't lie within the range of critical values of z, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which <u>we reject our null hypothesis</u>.

Therefore, we conclude that there is difference in the proportion of deaths between the 2 groups.

Also, <u>Margin of error</u> (E) =  1.96 \times \sqrt{\frac{\hat p_1(1-\hat p_1)}{n_1}+\frac{\hat p_2(1-\hat p_2)}{n_2} }

                                        =  1.96 \times \sqrt{\frac{0.011(1-0.011)}{2823}+\frac{0.002(1-0.002)}{7765} }

                                        =  <u>0.00397</u>

5 0
3 years ago
How do I solve this?
eduard
So, what i noticed is that there is a pattern regarding the grayed blocks. The first one starts off with 2, then 4, then 6. It is adding 2 each time, ex; 2+2+4, 4+2=6. The answer would be that the sixth one would have 12 grayed blocks.
3 0
1 year ago
Read 2 more answers
Someone saved 20% of the total of Ariana grandes new album. If the regular price is $30, how much did that person save?
AlladinOne [14]
They would get Ari's product for $6 dollars :)
3 0
3 years ago
Read 2 more answers
(-1,-1) has a slope of -6
Nikitich [7]

Answer:

y=-6x+5

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • 20.65 in word form and expanded form
    13·2 answers
  • Which answer is true
    14·1 answer
  • Show Work and explain but quickly, please.
    10·1 answer
  • Show that every member of the family of functions y = (6 ln(x) + C)/x , x &gt; 0, is a solution of the differential equation x2y
    15·1 answer
  • Free points come grabe them if you answer this properly <br> what is 1+2=?
    8·2 answers
  • System of equations <br> 5x+y=7<br> 20x+2=y
    7·1 answer
  • Here is an inequality for the graph that one of your
    12·1 answer
  • Paloma used these steps to solve the equation 6x+5=3(2x+1). Which choice describes the meaning of her result, 2=0?
    11·2 answers
  • Which table represents an exponential function?
    12·1 answer
  • What is the probability that a family with three children will have all girls?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!