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
Ivanshal [37]
3 years ago
10

According to a Pew Research Center, in May 2011, 35% of all American adults had a smart phone (one which the user can use to rea

d email and surf the Internet). A communications professor at a university believes this percentage is higher among community college students.She selects 300 community college students at random and finds that 120 of them have a smart phone. In testing the hypotheses: H0: p = 0.35 versus Ha: p > 0.35, she calculates the test statistic as Z = 1.82.1. There is enough evidence to show that more than 35% of community college students own a smart phone (P-value = 0.034).2. There is enough evidence to show that more than 35% of community college students own a smart phone (P-value = 0.068).3. There is not enough evidence to show that more than 35% of community college students own a smart phone (P-value = 0.966).4. There is not enough evidence to show that more than 35% of community college students own a smart phone (P-value = 0.034)
Mathematics
1 answer:
IgorC [24]3 years ago
5 0

Answer:

Step-by-step explanation:

For the null hypothesis,

p = 0.35

For the alternative hypothesis,

P > 0.35

Since the z score is given as z = 1.82, we would find the probability value by determining the area above the z score from the normal distribution table. The required probability value is

1 - 0.966 = 0.034

Assuming alpha = 0.05,

Since alpha, 0.05 > than the p value, 0.034, then we would reject the null hypothesis. Therefore, the correct option is

At significance level of 5%,

There is enough evidence to show that more than 35% of community college students own a smart phone (P-value = 0.034).

You might be interested in
Use the information given to answer the question
Stels [109]
The answer is 30. The (14) comes from the amount the Tshirts cost, the 12 is the amount of T-shirts that are printed each hour and 30 is the starting amount of T-Shirts
4 0
3 years ago
Point A is located at (4,-7). The point is reflected over the x-axis, it’s image is located at what point ?
Alexeev081 [22]

Answer:I think it is (4,7)

Step-by-step explanation:

7 0
3 years ago
Alex wants to paint the four walls of her new office. The room has dimensions 18 feet by
jekas [21]

Answer:

58

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Help me please...........?
Makovka662 [10]
189 inches is 15.75 feet

16 ft - 15.75 ft = 0.25 ft

0.25ft = 3 inches

He must vault 3 inches higher
4 0
3 years ago
What percent is 39 ft of 110 ft
Levart [38]

Answer:

80

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • What value of c makes the polynomial below a perfect square?
    10·1 answer
  • Two friends share 7 cookie equally. How many cookies does each friend get?
    9·2 answers
  • What numbers add up to -5 and multiply to get -90
    14·2 answers
  • PLEASE HELP. I would really appreciate it thank youuu​
    14·2 answers
  • If you are answering the questions:Evaluate the expressions and dont do #16
    14·1 answer
  • Can I please get help?!​
    11·1 answer
  • I need help!!!!!!!!!!!!!!!!
    14·2 answers
  • HELP DUE SOON!<br><br> x = ?? degrees
    6·1 answer
  • HELP!!!!! PLEASE!!!!!
    9·2 answers
  • Laws involving positive integral exponents to zero &amp; negative integral exponents.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!