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
Ipatiy [6.2K]
2 years ago
14

The display provided from technology available below results from using data for a smartphone​ carrier's data speeds at airports

to test the claim that they are from a population having a mean less than 4.004.00 Mbps. Conduct the hypothesis test using these results. Use a 0.050.05 significance level. Identify the null and alternative​ hypotheses, test​ statistic, P-value, and state the final conclusion that addresses the original claim. LOADING... Click the icon to view the display from technology. What are the null and alternative​ hypotheses? A. Upper H 0H0​: muμequals=4.004.00 Mbps

Mathematics
1 answer:
Travka [436]2 years ago
3 0

Answer:

Null hypothesis:\mu \geq 4.0    

Alternative hypothesis:\mu < 4.00    

t=\frac{3.48-4.00}{\frac{1.150075}{\sqrt{45}}}=-3.033077    

df=n-1=45-1=44

Since is a left-sided test the p value would be:    

p_v =P(t_{(44)}    

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 reject the null hypothesis, so we can conclude that the mean is significantly less than 4.00 at 5% of significance.  

Step-by-step explanation:

Data given and notation    

\bar X=3.48 represent the sample mean

s=1.150075 represent the sample standard deviation    

n=45 sample size    

\mu_o =4.00 represent the value that we want to test  

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

z 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 is less than 4.00 :    

Null hypothesis:\mu \geq 4.0    

Alternative hypothesis:\mu < 4.00    

Since we don't know the population deviation, 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{3.48-4.00}{\frac{1.150075}{\sqrt{45}}}=-3.033077    

P-value    

First we need to calculate the degrees of freedom given by:

df=n-1=45-1=44

Since is a left-sided test the p value would be:    

p_v =P(t_{(44)}    

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 reject the null hypothesis, so we can conclude that the mean is significantly less than 4.00 at 5% of significance.    

You might be interested in
-(-(-)(-)(-10x))=-5 solve for x
Pavlova-9 [17]
The answer is c cccccc the answ er is c
5 0
2 years ago
a painter uses 4 gallons of paint to paint each apartment in a building. if the painter has 45 gallons of paint, how many apartm
DochEvi [55]
The painter painted 11 apartments because 4 doesn’t go into 45, so the closest think to 45 is 4 x 11 (44). the painter will have 1 gallon left.
7 0
2 years ago
Read 2 more answers
Raspberries are hannas favorite fruit. She can only buy one pins for 2.55$ how many pounds of raspberries can Hannah but for $12
jeyben [28]

Answer:

She can buy 36

Step-by-step explanation:

7 0
2 years ago
T
liq [111]

Answer:

whaaaaaa

Step-by-step explanation:

please like and Mark as brainliest

6 0
3 years ago
HELP ASAP : Find the largest value of n such that 5x^2+nx+48 can be factored as the product of two linear factors with integer c
Anna71 [15]

Answer:

n=241

Step-by-step explanation:

We are given

5x^2+nx+48

Let's assume it can be factored as

5x^2+nx+48=(5x-s)(x-r)

now, we can multiply right side

and then we can compare it

5x^2+nx+48=5x^2-5rx-sx+rs

5x^2+nx+48=5x^2-(5r+s)x+rs

now, we can compare coefficients

rs=48

5r+s=-n

n=-(5r+s)

now, we can find all possible factors of 48

and then we can assume possible prime factors of 48

48=-+(1\times 48)

48=-+(2\times 24)

48=-+(3\times 16)

48=-+(4\times 12)

48=-+(6\times 8)

Since, we have to find the largest value of n

So, we will get consider larger value of r because of 5r

and because n is negative of 5r+s

so, we will both n and r as negative

So, we can assume

r=-48 and s=-1

so, we get

n=-(5\times -48-1)

n=241


7 0
3 years ago
Other questions:
  • Use any method to solve the equation. If necessary, round to the nearest hundredth. 9x^2=17
    8·2 answers
  • Calculate each mountain path grade to the nearest percent.
    13·1 answer
  • Marshall buys a sack of peaches for $5.98. The peaches weigh
    6·1 answer
  • Find the value of y in the diagram below.
    11·1 answer
  • The pumpkin patch is open day.if it sells 2,750 pounds of pumpkin each day, about how many pounds does it sell in 7 days?
    10·1 answer
  • Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P and volume V satisfy the eq
    10·1 answer
  • PLEASE ANSWER QUICKLY<br> (I will give first answer Brainliest)
    5·1 answer
  • I’ll give brainliest
    7·1 answer
  • Drop me a workout routine that i can do in my room . LOL
    7·2 answers
  • 2,451 people came to watch the Easter parade. 745 of those people were adults. How many children came to the parade? 742 child p
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!