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
stiks02 [169]
3 years ago
9

Hi! this question applies to #43

Mathematics
1 answer:
Anika [276]3 years ago
4 0

When an absolute value is changed in the horizontal,  <em>the units in change are inside the "bars"</em>, and are as follows: <em>left = positive, right = negative</em>.

Therefore, the equation is y = | x - 6.5 |.

You might be interested in
A worm moves forward 3/8 inch every 5 minutes for 1 hour 25 minutes. How fast does the worm move in this time?
Alina [70]
Multiply <span>3/8 inch by 75 and divide by 5</span>
6 0
3 years ago
Read 2 more answers
Historically, the proportion of people who trade in their old car to a car dealer when purchasing a new car is 48%. Over the pre
choli [55]

Answer:

z=\frac{0.4 -0.48}{\sqrt{\frac{0.48(1-0.48)}{115}}}=-1.717  

p_v =P(z  

So the p value obtained was a very low value and using the significance level given \alpha=0.1 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 people that have traded in their old car is lower than 0.48 or 48%.  

Step-by-step explanation:

Data given and notation

n=115 represent the random sample taken

X=46 represent the number of people that have traded in their old car.

\hat p=\frac{46}{115}=0.4 estimated proportion of people that have traded in their old car

p_o=0.48 is the value that we want to test

\alpha=0.1 represent the significance level

Confidence=90% or 0.9

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the proportion is less than 0.48.:  

Null hypothesis:p\geq 0.48  

Alternative hypothesis:p < 0.48  

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.

Calculate the statistic  

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

z=\frac{0.4 -0.48}{\sqrt{\frac{0.48(1-0.48)}{115}}}=-1.717  

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=0.1. The next step would be calculate the p value for this test.  

Since is a left tailed test the p value would be:  

p_v =P(z  

So the p value obtained was a very low value and using the significance level given \alpha=0.1 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 people that have traded in their old car is lower than 0.48 or 48%.  

4 0
3 years ago
PLEASE HELP!!
Ksju [112]

Take off 3 of the pennies and the 5 that remain would be 3 nickels and 2 dimes

2 dimes=20 cents

3 nickels = 15 cents

3 pennies=3 cents

Or these 8 coins = 38 cents

7 0
3 years ago
What is the intersection of plane STXW and plane TUYX?
levacccp [35]
Explain a little more

4 0
3 years ago
Read 2 more answers
A frame is marked down by 22 percent from an original price of $14.50. What is the new price?
nydimaria [60]

Answer:

$11.31

Step-by-step explanation:

$14.50x .22= 3.19

$14.50- 3.19= 11.31

3 0
2 years ago
Read 2 more answers
Other questions:
  • What’s the area of a square with a diagonal of 8in
    10·2 answers
  • PLEASE HELP ME!!!!!<br> WILL NAME BRANLIEST!!
    10·1 answer
  • I need help on this <br><br> 3<br> - 2 3/5
    13·2 answers
  • Solve this expression 5x^2-13x-6
    13·1 answer
  • Given the equation 3x + 25 = 7x − 5, which order of operations completely solves for x
    12·1 answer
  • Janice bought her mother a bunch of 10 flowers. Two of the flowers are daises. One half of the remaining flowers are tulips. Wri
    10·2 answers
  • How do you solve this? Need help please
    14·1 answer
  • What do you divide 71.2 by to get 7120
    10·2 answers
  • What is the constat proportionlity in the equation 3y=2x
    7·1 answer
  • A person draws a card from a hat. Each card is one color, with the following probabilities of being drawn: 1/10 for white, 1/15
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!