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
Xelga [282]
2 years ago
10

Ms. Harper knows that her students in a computing course can choose from one of three operating systems for the semester: Doors,

Banana, or Duix. Ms. Harper wants to test the hypothesis that her students will select the operating systems in the same proportion as students in other computing courses at the university. She conducts a χ2 goodness-of-fit test and calculates χ2=3.79 with a corresponding p-value of 0.15. Which of the following is correct at a 5-percent level of significance?
A. Reject the null hypothesis, since 3.79 > 2.
B. Fail to reject the null hypothesis, since 3.79 > 2.
C. Reject the null hypothesis, since 0.15 > 0.05.
D. Fail to reject the null hypothesis, since 0.15 > 0.05.
E. Reject the null hypothesis, since 0.15 < 3.79.
Mathematics
1 answer:
SIZIF [17.4K]2 years ago
7 0

Answer:

D. Fail to reject the null hypothesis, since 0.15 > 0.05.

Step-by-step explanation:

P-value and decision regarding null hypothesis:

If the p-value is larger than the significance level, we do not the null hypothesis.

Otherwise, we reject the null hypothesis.

In this question:

The test statistic is χ2=3.79, with a p-value of 0.15.

The level of significance is 0.05.

Since 0.15 > 0.05, we fail to reject the null hypothesis, and the correct answer is given by option D.

You might be interested in
The length of the longer leg of a right triangle is
Harman [31]
A and b are legs
a^2+b^2=c^2
lets say
a>b

so
a=13+3b
c=14+3b

a^2+b^2=c^2
(13+3b)^2+b^2=(14+3b)^2
9b^2+78b+169+b^2=9b^2+84b+196
10b^2+78b+169=9b^2+84b+196
minus 9b^2 both sides
b^2+78b+169=84b+196
minus 84b both sides
b^2-6b+169=196
minus 196 both sides
b^2-6b-27=0
factor
(b+3)(b-9)=0
set to zero
b+3=0
b=-3, false, dimentions cannot be negative

b-9=0
b=9

shorter leg is 9

a=13+3b
a=13+3(9)
a=13+27
a=40

c=14+3b
c=14+27
c=41

side legnths are
9in, 40in, 41in
3 0
2 years ago
A tidal power plant relies on a dam built ? From a beach into the sun
lisabon 2012 [21]
Ok no It doesn’t be a little more specific please
7 0
2 years ago
Read 2 more answers
What % of $30 is $21?
Black_prince [1.1K]

Answer:

70

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Which equation can be used to find the volume of this solid? A rectangular prism with a length of 5 centimeters, width of 4 cent
beks73 [17]

Answer:

V= 2 times 4 times 5

4 0
3 years ago
Plllls help me with these three I will make brainlesst pls no links
kkurt [141]

Answer:

90+1,2 = 200

Step-by-step explanation:

maaf kalo salah

6 0
2 years ago
Other questions:
  • If mary deposited $950 in a savings account. It earned a total of $195 in simple interest over three years. What was the simple
    7·1 answer
  • How many times larger is 2x10^3 is 8x10^6
    6·1 answer
  • Solve 49x + 9= 49x+84 how many solution it has
    9·1 answer
  • Evaluate the expression 3.5 m
    13·2 answers
  • The area of a right triangle is 39.6cm2 , and the base of the triangle is 12in . Which of the following values is the height of
    6·1 answer
  • Solve for x in the parallelogram below.
    5·1 answer
  • Help!!?!?!!!!!!!?!!!!!!!!!
    12·1 answer
  • Helpppp plssss anyoneeee
    14·1 answer
  • HELP PLEASE WILL GIVE BRAINLIEST
    13·2 answers
  • If Canada were to stop accepting immigrants, the population would begin to decrease by 0.5% per year. Canada’s population is cur
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!