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
raketka [301]
3 years ago
15

SOMEONE PLEASE PLEASE HELP PLEASE HELP

Mathematics
1 answer:
mr Goodwill [35]3 years ago
6 0

Answer:

see explanation

Step-by-step explanation:

Using the rule of exponents

a^{m} = \frac{1}{a^{-m} } , then

2 ÷ 10^{4} = 2 ÷ \frac{1}{10^{-4} }

To divide leave first, change ÷ to × , turn second upside down

= 2 × 10^{-4}

You might be interested in
It is asking what is the relationship between segment pq and p”q’
nadezda [96]

angles it sounds like but ik the struggle

7 0
3 years ago
Steven made $25 mowing lawns. With this money, Steven wants to save $10 and buy a new t-shirt which costs $10.81. With the rest
strojnjashka [21]

he can buy 1.52 packages.

5 0
3 years ago
What would be the profit when the price is $35?
Roman55 [17]

Step-by-step explanation:

The total expenses stay the same at $92,039.

The income changes to 12,000 × $35 = $420,000.

So the profit is $420,000 − $92,039 = $327,961.

3 0
3 years ago
Janet unfolded a cardboard box. The figure of the unfolded box is shown below:
bixtya [17]
3rd one 10 x 6 x 6
hope this is right 

5 0
3 years ago
A sample of 1200 computer chips revealed that 45% of the chips fail in the first 1000 hours of their use. The company's promotio
yaroslaw [1]

Answer:

z=\frac{0.45 -0.48}{\sqrt{\frac{0.48(1-0.48)}{1200}}}=-2.08

p_v = P(Z

So the p value obtained was a low value and using the significance level given \alpha=0.05 we see that 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 chips that fail in the first 1000 hours of their use is not significantly less than 0.48.   

Step-by-step explanation:

Data given and notation

n=1200 represent the random sample taken

\hat p=0.45 estimated proportion of chips that fail in the first 1000 hours of their use

\mu_0 =0.48 is the value that we want to test

\alpha=0.05 represent the significance level

Confidence=95% or 0.95

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 true proportion si less then 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  is significantly different from a hypothesized value .

Calculate the statistic  

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

z=\frac{0.45 -0.48}{\sqrt{\frac{0.48(1-0.48)}{1200}}}=-2.08

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=0.05. 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 low value and using the significance level given \alpha=0.05 we see that 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 chips that fail in the first 1000 hours of their use is not significantly less than 0.48.  

6 0
3 years ago
Other questions:
  • The old time train museum is raising the price of tickets for train rides.Tickets used to cost $4.80 each. The new ticket price
    8·2 answers
  • How do you find a squeres volume<br> Diameter of 2 inches
    11·1 answer
  • A problem states: "There are 5 more girls than boys at the party. There are 27 children at the party in all. How many boys are t
    12·2 answers
  • Each front tire on a particular type of vehicle is supposed to be filled to a pressure of 26 psi. Suppose the actual air pressur
    12·1 answer
  • A garden is in the shape of a rectangle. If the garden has a length of 4 feet and a width of 6 feet, what is the area of the gar
    9·1 answer
  • Please help (CORRECT ANSWERS ONLY)
    5·1 answer
  • Work out: 496 g + 6 kg 76 g – 2 kg 846 g​
    7·2 answers
  • Find the distance between (6, 0) and (10, 3).
    15·2 answers
  • What happens to the mode of the data set shown below if the number 8 is added to the data set?
    5·1 answer
  • Six numbers from a list of nine integers are $7$, $8$, $3$, $5$, $9$, and $5$. What is the largest possible value of the median
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!