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
denis23 [38]
3 years ago
5

A professor using an open-source introductory statistics book predicts that 60% of the students will purchase a hard copy of the

book, 25% will print it out from the web, and 15% will read it online. At the end of the semester she asks her students to complete a survey where they indicate what format of the book they used. Of the 126 students, 71 said they bought a hard copy of the book, 30 said they printed it out from the web, and 25 said they read it online. What would be the appropriate set of hypotheses for testing if the professor's predictions were accurate?
Mathematics
1 answer:
solniwko [45]3 years ago
7 0

Answer:

See explanation below.

Step-by-step explanation:

We are going to define the null hypothesis and the alternative hypothesis.

The null hypothesis is the hypothesis that states that the population results are actually what they claimed to be.

So, in this case, the null hypothesis (H₀) would be: P(student buys a hard copy) = 0.60 P(student prints book from the web) = 0.25, P(student reads book online) = 0.15

The alternate hypothesis states that the results were not the expected ones, in this case, any alternate hypothesis with different probabilities of any of the three cases will do.

Hₐ= The percentages of students for any of the three cases is different (either greater or lower)

You might be interested in
Solve for xxx.<br> −9x+2&gt;18 OR 13x+15≤−4
yanalaym [24]
-9x + 2 > 18.

-9x > 16

x < -16/9

13x ≤ -19

x ≤ -19/13

x < -16/9 or. x ≤ -19/13
3 0
3 years ago
Read 2 more answers
Plzz help me on this <br> write .219 in word form!?? <br> plzz help me on that
Ulleksa [173]
Point two one nine, however, decimals below 1 usually have a zero before the decimal point.
4 0
3 years ago
Read 2 more answers
The difference of twice a number and 3 is -21 translated
Westkost [7]

Answer:

2x-3=-21.

2x=-21+3.

2x=-18.

x=-18/2.

x= -9.

7 0
3 years ago
Read 2 more answers
(a+b)²=d<br> Isolate a on one side
PilotLPTM [1.2K]

Answer:

a=sqrt(d)-b, a=-sqrt(d)-b

Step-by-step explanation:

(a+b)^2=d

(a+b)=sqrt(d)

a+b=sqrt(d), a+b=-sqrt(d)

a=sqrt(d)-b, a=-sqrt(d)-b

8 0
3 years ago
Read 2 more answers
Suppose you have 24 CDs. You know that you have 7 more CDs than your friend. Write and solve an equation to find the number of C
mote1985 [20]
It’s c hope this helped
8 0
3 years ago
Other questions:
  • Katie bought five packages of stickers with 25 stickers in each package she also bought three boxes of markers with 12 markers i
    10·1 answer
  • A lion’s heart beats 12 times in 16 seconds.how many heartbeats will it have in 60 seconds?
    11·1 answer
  • The rest of the numbers are cut offf<br><br> 225<br> 250<br> 270
    11·1 answer
  • Convert to vertex form.
    12·1 answer
  • Determine if (1,2) (3,4) (5,5) is a function
    6·2 answers
  • If one container holds 55 balls, how many balls will nine containers hold? A. 395 B. 455 C. 355 D. 495
    9·2 answers
  • What is the volume of a pyramid with base area B = 9 ft2 and height h = 11 ft?
    6·2 answers
  • Determine the finance charge on an $8,000 loan with a monthly payment of $162.80 for 60 months
    14·2 answers
  • Option A<br>Option B<br>Option C<br>Option D​
    7·2 answers
  • A bolt has 6 1/2 turns per inch how many turns would be in 2 1/2 inches of threads
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!