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
kari74 [83]
2 years ago
8

Seth is trying to find the unit price for a package of blank discs on sale at 10 for 5.49, his answer was $1.82 per disc is he c

orrect?
Mathematics
1 answer:
tatyana61 [14]2 years ago
5 0
Seth is incorrect, because on sale, 1 disc would cost about $0.55.
I figured this out by dividing 5.49 by 10, and got $0.549 which rounds to $0.55.


If this is incorrect, I am sorry, but I am 99.9% sure that I am correct.
You might be interested in
In the past, the average age of employees of a large corporation has been 40 years. Recently, the company has been hiring older
Viktor [21]

Answer:

p_v =P(t_{(63)}>2.5)=0.0075  

If we compare the p value and the significance level given \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can conclude that the mean age is significantly higher than 45 years at 5% of significance.  

Step-by-step explanation:

1) Data given and notation  

\bar X=45 represent the mean height for the sample  

s=16 represent the sample standard deviation for the sample  

n=64 sample size  

\mu_o =40 represent the value that we want to test

\alpha=0.05 represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean age is higher than 40 years, the system of hypothesis would be:  

Null hypothesis:\mu \leq 40  

Alternative hypothesis:\mu > 40  

If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic

We can replace in formula (1) the info given like this:  

t=\frac{45-40}{\frac{16}{\sqrt{64}}}=2.5    

P-value

The first step is calculate the degrees of freedom, on this case:  

df=n-1=64-1=63  

Since is a one right tailed test the p value would be:  

p_v =P(t_{(63)}>2.5)=0.0075  

Conclusion  

If we compare the p value and the significance level given \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can conclude that the mean age is significantly higher than 45 years at 5% of significance.  

6 0
3 years ago
Where might you see the double of 5 in real life
ira [324]

Answer:

Your eyes: 1+1, Legs of a dog: 2+2, Your fingers: 5+5, Etc.

Step-by-step explanation:

4 0
2 years ago
Subtract -7x + 6 from -2x^2 + 9x - 2
JulsSmile [24]

Answer:

( - 2 {x}^{2}  + 9x - 2) - ( - 7x + 6) \\   = - 2 {x}^{2}  + (9 + 7)x + ( - 2 - 6) \\  =  - 2 {x}^{2}  + 16x - 8

4 0
3 years ago
How to determine proofs
wariber [46]

Answer:

check footprints and then check finger print the finger print pour powder on it and Trace

6 0
3 years ago
Determine the value of x
Dvinal [7]

x = 2a

a = 3

x = 2 · 3 = 6 ← the end answer

3 0
2 years ago
Read 2 more answers
Other questions:
  • Cait purchases a $20 item at a store. She uses a coupon to receive a 15% discount and she pays 6% on the item. She calculates th
    10·1 answer
  • F(x) = 2x( 11x^4 + 12/x+1) what is f’(x)
    15·1 answer
  • Help umm how do i do this im dumb idk how to do it :(
    5·1 answer
  • The graph of a linear function passes through the point (1, -10) and has a slope of -5. Which of these best represents the zero
    6·2 answers
  • Which methods could you use to calculate the y-coordinate of the midpoint of a vertical line segment with endpoints at (0,0) and
    12·1 answer
  • What is the expression for the area of this rectangle?
    5·1 answer
  • Question attached plz answer
    6·1 answer
  • The question is in the picture (Alegbra 1)
    8·1 answer
  • X - 1 = 30x^-1 solve for x
    15·1 answer
  • Complete the table for the properties of each quadrilateral
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!