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
Scrat [10]
3 years ago
9

Please i suck at math lol 2.0

Mathematics
2 answers:
Salsk061 [2.6K]3 years ago
6 0

Answer:

i- ;-;

Step-by-step explanation:

marissa [1.9K]3 years ago
6 0

Answer:

9

Step-by-step explanation:

an edge would be any line, the face is a surface, a point is obviously the corner, so there are 9 edges, 6 points, and 5 faces.

You might be interested in
Given x=-3, y=6, and z=-4 -15+(-x)+y= Thank you for your help!
lesya692 [45]

Solution:

Given, x=-3, y=6, and z=4

Putting these values in the given equation:

-15+(-x)+y

= -15+(-(-3)+6

= -15+3+6

= -15+9

= -6

6 0
3 years ago
What is the nth term rule of the linear sequence below?<br><br> -5 -2 1 4 7
MAXImum [283]
3n+8 is the answer !!!!
8 0
3 years ago
Please someone help me
just olya [345]
Would 4 more pts, sorry
8 0
3 years ago
A well-known brokerage firm executive claimed that 50% of investors are currently confident of meeting their investment goals. A
VMariaS [17]

Answer:

p_v =P(Z  

If we compare the p value obtained and using the significance level given \alpha=0.005 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the proportion of adults that said they are confident of meeting their goals  is significantly lower than 0.5 or 50% .  

Step-by-step explanation:

1) Data given and notation

n=200 represent the random sample taken

X represent the people that said they are confident of meeting their goals

\hat p=0.44 estimated proportion of adults that said they are confident of meeting their goals

p_o=0.5 is the value that we want to test

\alpha=0.005 represent the significance level

Confidence=99.5% or 0.995

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

2) Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the proportion is less than 0.5.:  

Null hypothesis:p\geq 0.5  

Alternative hypothesis:p < 0.5  

When we conduct a proportion test we need to use the z statistic, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

The One-Sample Proportion Test is used to assess whether a population proportion \hat p is significantly different from a hypothesized value p_o.

3) Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.44 -0.5}{\sqrt{\frac{0.5(1-0.5)}{200}}}=-1.697  

4) Statistical decision  

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

The significance level provided \alpha=0.005. The next step would be calculate the p value for this test.  

Since is left tailed test the p value would be:  

p_v =P(Z  

If we compare the p value obtained and using the significance level given \alpha=0.005 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the proportion of adults that said they are confident of meeting their goals  is significantly lower than 0.5 or 50% .  

4 0
3 years ago
Jeremy drew a polygon with four right angles and four sides with the same length. Name all the polygons that he could have drawn
Anastasy [175]
He could have only drawn a square
6 0
3 years ago
Other questions:
  • Question 5<br> Find the sum of the following geometric series.<br> 8+1.6+0.32+0.064 + ...
    5·1 answer
  • The mean of four numbers is 70. The mean increases to 80 when a fifth number is added. What is the fifth number?
    13·1 answer
  • Distribute to simplify
    11·1 answer
  • What's the slope and y-intercept of the equation 3x + 4y = 8?
    9·2 answers
  • PLEASE HELP ASAP !!!
    6·2 answers
  • 6) Víctor se dedica a la exportación de café y su
    15·1 answer
  • I need help with all question, I will give brainliest.
    6·2 answers
  • Given the function
    9·1 answer
  • HELP MME WITH THIS PLEASE
    11·2 answers
  • ... Stella uses the expression 0.40a, where a is the original attendance at a play, to find the reduced attendance at the next p
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!