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
NemiM [27]
3 years ago
7

According to a U.S. news poll, 38% of students in the class of 2013 had done an internship during their time as an undergraduate

student. Dana is interested in finding out whether students at her university had an internship rate that was higher than the national average. She decided to ask 100 architecture majors whether they had ever done an internship while at their university. She collected the responses and calculated that the proportion for her university was 43%. Which one of the following statements about the z-test is correct?
Which one of the following statements about the z-test is correct?

a. It is safe to use the z-test for p.

b. It is not safe to use the z-test for p, since n * po is not large enough.

c. It is not safe to use the z-test for p, since n * (1 − po) is not large enough.

d. It is not safe to use the z-test for p, since the sample is not a random sample from the entire population (or cannot be considered as one)
Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
3 0

Answer: Option 'a' is correct.

Step-by-step explanation:

Since we have given that

Percentage of students in the class of 2013 has done an internship during their time as an undergraduate student = 38% = p₀

Number of architecture majors = 100

We need to check that whether students at her university had an internship rate that was higher than the national average.

Proportion for her university = 43% = p₁

Here, n = 100

Since n > 30.

so, we can use z-test.

Z-test is generally use to identify whether two means are different when the standard deviation is given.

Hence, it is safe to use the z-test for p.

Therefore, option 'a' is correct.

You might be interested in
-2(4n-6)=22 what is n?
Anna71 [15]

Answer: n = 5/4

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

−2(4n−6)=22

(−2)(4n)+(−2)(−6)=22(Distribute)

−8n+12=22

Step 2: Subtract 12 from both sides.

−8n+12−12=22−12

−8n=10

Step 3: Divide both sides by -8.

-8n/-8 = 10/-8

n = 5/4

3 0
3 years ago
Read 2 more answers
Ms. Perkins has a bag of candy with 30 pieces. She gave away 1/5 of the pieces to her students. How many pieces does she have le
fgiga [73]
Ms. Perkins will have 24 pieces of candy left, because 30 ÷ 5 = 6. So there for 1/5 is equal to 6 pieces of candy.
6 0
3 years ago
12. The geographic grid apportions the globe into hemispheres of 180 lines of longitude. Based on your knowledge of basic geomet
ANEK [815]

Answer:

For the first question, 180 degrees equals to a half of the sphere. For the second question, you need 24 central meridians for a complete sphere, which are exactly the hours in a day.

Step-by-step explanation:

A sphere is basically a 3D circle. As a circle has 360 degrees, 180 degrees would be half of a circle. Imagine you are on a satellite over the north pole or the south pole and you have a way to cut the earth by the middle. You will get two halves of sphere.

About the second question, you may need to have in mind that a day is the time spent for the earth to rotate all 360 degrees over its own axis. British fellow, on XIX century, decided they were the center of the world. As previously, back in the days, some other people decided a day had 24 hours, they decided to draw this lines and divide the earth in 24 pieces, so they could knew which time was on every point their extense kingdom had.  As I said, a circle has 360 degrees, (360 degrees)/(24 hours) equals to 15 degrees.

5 0
3 years ago
Does anyone know a fraction equation that equals 13?
taurus [48]

Answer:

11 1/2 + 1 1/2 = 13

Step-by-step explanation:

11+1=12

1/2+ 1/2 =1

12+1= 13

7 0
3 years ago
Read 2 more answers
Write that number as a decimal?
pshichka [43]
Hmm a number as. a decimal is 1/2=0.50
5 0
3 years ago
Other questions:
  • Select all the correct systems of equations.<br> Which systems of equations have infinite solutions?
    6·1 answer
  • What is the nth term of the arithmetic sequence? 7, 5, 3, 1, …
    5·2 answers
  • TIMED QUIZ! possibly easy i just don’t get it. HELP
    14·1 answer
  • Isaac and Shonda can rent a canoe for $12 per hour and a mountain bike for $9 per hour. Together, they have $138 to spend. Let c
    9·2 answers
  • Please help with explanation.
    6·1 answer
  • 21/7 of 2 1/2 can you show example please
    7·1 answer
  • Is there a trick to find?​
    13·2 answers
  • All ratios equivalent to 5:1.
    9·2 answers
  • I NEED HELP WITH QUESTION 2 ONLY (GIVING BRAINIEST) 50 points
    7·1 answer
  • I need help with this math i am not very good at it
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!