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
Orlov [11]
3 years ago
9

Individuals filing federal income tax returns prior to March 31 received an average refund of $1056. Consider the population of

"last-minute" filers who mail their tax return during the last five days of the income tax period (typically April 10 to April 15).
a. A researcher suggests that a reason individuals wait until the last five days is that on average these individuals receive lower refunds than do early filers. Develop appropriate hypotheses such that rejection of H0 will support the researcher’s contention.
b. For a sample of 400 individuals who filed a tax return between April 10 and 15, the sample mean refund was $910. Based on prior experience a population standard deviation of σσ = $1600 may be assumed. What is the p-value?
c. At αα = .05, what is your conclusion?
d. Repeat the preceding hypothesis test using the critical value approach.
Mathematics
1 answer:
Sholpan [36]3 years ago
6 0

Answer:

Step-by-step explanation:

(A) Develop appropriate hypotheses such that the rejection of H0 will support the researcher's contention.

What is the researcher's contention?

The researcher's contention is that late filers receive lower refunds than early filers. Hence, the researcher's contention will be the alternative hypothesis; since the rejection of H0 will imply the acceptance of Ha (the alternative hypothesis).

To this regard, the appropriate hypotheses developed are:

H0: Late filers receive HIGHER refunds than early filers

H1: Late filers receive lower refunds than early filers

The rejection of H0 will lead to the acceptance of H1; which is in line with the researcher's contention/claim.

You might be interested in
Carlos needs 1.7 meters of wire for one project and 0.8 meters of wire for another project shade the model to represent the tota
vesna_86 [32]

Answer:

Step-by-step explanation:

Given that ;

Carlos needs 1.7 meters of wire for one project    &

0.8 meters of wire for another project

we are to shade the model to represent the total amount of wire Carlos needs .

NOW;

For both projects ; Carlos needs ( 1.7 + 0.8) meters of wire =  2.5 meters of wire

In  the  attached files below. the first picture shows the diagram attached to the question and the second one shows the shading of the model which represent the total amount of wire Carlos needs.

7 0
3 years ago
By hiring 45 new employees, a department store increased its help by 18% during the Christmas season. How many employees did the
bagirrra123 [75]
Hi!

We can set up a proportion then cross multiply to solve this.

\frac{45}{x}  \frac{18}{100}

45 x 100 = 4500
4500/18 = 250

The answer is 250

Hope this helps! :)
7 0
3 years ago
Find the missing length of the right triangle
LiRa [457]
Is their suppose to be a picture ?
8 0
3 years ago
In a 40-day period, at least one bear was observed by a camper in a designated camp site on 28 separate days. According to this
olasank [31]
<span>At least one bear was sighted on 28 separate days in 40 day period total = 28/40
We're looking for the daily frequency of bear sightings, that's in the whole 40 day period. 

Let's say 40 days period = 100%.
Then what's 28 days?
</span>

So the solution we're looking for would be (<span><span>28 days∗100) / </span>40 days = 70%</span>

The final answer is B. 70%.

<span>
</span>

5 0
3 years ago
Read 2 more answers
Which expression can be used to find the surface area of the following square pyramid?
kodGreya [7K]

Answer:

Step-by-step explanation:

expression for surface area = a² + a √(a²/4+h²)

=4² + 2(4) √(4²/4+5²)

=16 + 8  √(16/29)

= 24 √0.55

= 20.65

6 0
3 years ago
Other questions:
  • 3 pies are being shared equally among 9 friends. How much pie does each friend receive?
    11·2 answers
  • What is <br><img src="https://tex.z-dn.net/?f=6.73%20-%202%20%5Ctimes%205to%20%5C%3A%20the%20%5C%3Azero%20%5C%3A%20power%20%5Cdi
    7·1 answer
  • Help mewa plzzzzzzzz
    7·2 answers
  • Freezer A measures 1 ft times 1 ft times 5 ft and sells for ​$300. Freezer B measures 1.5 ft times 1.5 ft times 4 ft and sells f
    14·1 answer
  • What is the distance from the origin to point A graphed on the complex plane below?
    8·1 answer
  • The formula I = PRT where I = Interest, P = principal, R = rate, and T = time is used to calculate the amount of simple interest
    8·1 answer
  • LaShea would like to invest her $100 in birthday money. Which option will give her the most money at the end of the investment p
    10·2 answers
  • What are the values of P?
    10·1 answer
  • Which is precisely defined using the undefined terms point and plane?
    10·1 answer
  • Convert from a fraction to a decimal 1/4
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!