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
ki77a [65]
3 years ago
6

Solve for x:3/2x-2=-5

Mathematics
1 answer:
ivolga24 [154]3 years ago
4 0

The answer is X = -2

You might be interested in
Solve 5x – 2y = 11 for y.​
Yuki888 [10]
Answer
42

step by step
5 times 11 - 2 times 11
3 0
3 years ago
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
Identify the terms, coefficients, and constants in the expression. 7h + 3
dexar [7]

Answer:

7h+10

Step-by-step explanation:


7 0
2 years ago
Joaquin bought a bookcase on sale for $120, which was two-thirds of the original price. What was the original price of the bookc
weqwewe [10]
180
Because 120 divided by 2 is 60.
And 120 + 60 is 180
7 0
3 years ago
of the students in Ms. Danver's class, 6 walk to school. This represents 30% of her students.How many students are in Ms. Danver
Andrews [41]
21 students because if 6 represents 30% u add 6 two more time which equals 18 and 90% then u add 3 more because it is half of 6. when u add 3 more u will get 21 and 100%
8 0
3 years ago
Read 2 more answers
Other questions:
  • A box in the shape of a rectangular prism has a dimension of 30 meters x 27 meters x 28 meters what is the surface area of the b
    8·1 answer
  • ​(a) The additive inverse of negative two thirds
    6·2 answers
  • 5X+5X_100=0<br><br> V+4v_32=0
    9·1 answer
  • What is the answer? -5.5(d-2)=-12.1 what is the value for d
    11·1 answer
  • Find The total number of unit cubes that fill the entire prism.
    11·1 answer
  • Given the information the figure is a parallelogram.
    14·1 answer
  • Find the value of the unknown angles in each figure.<br><br>HELPPP​
    10·1 answer
  • At what point should an open circle be drawn?<br> 0 (-1,0)<br> 0 (0,0)<br> 0 (0, 1)<br> 0 (1, 0)
    8·1 answer
  • A total of 553 tickets were sold for the school play. They were either adult tickets or student tickets. There were 53 more stud
    5·2 answers
  • Solve each equation below for x. <br><br> 2^(x+3)=2^2x<br><br> 3^5=9^2x<br><br> 3^(2x+1)=3^3
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!