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
MaRussiya [10]
3 years ago
11

Use the drop-down menus to complete the statements to match the information shown by the graph.

Mathematics
1 answer:
Lostsunrise [7]3 years ago
7 0
The right answer is 1/2
You might be interested in
• A researcher claims that less than 40% of U.S. cell phone owners use their phone for most of their online browsing. In a rando
antiseptic1488 [7]

Answer:

We failed to reject H₀

Z > -1.645

-1.84 > -1.645

We failed to reject H₀

p > α

0.03 > 0.01

We do not have significant evidence at a 1% significance level to claim that less than 40% of U.S. cell phone owners use their phones for most of their online browsing.

Step-by-step explanation:

Set up hypotheses:

Null hypotheses = H₀: p = 0.40

Alternate hypotheses = H₁: p < 0.40

Determine the level of significance and Z-score:

Given level of significance = 1% = 0.01

Since it is a lower tailed test,

Z-score = -2.33 (lower tailed)

Determine type of test:

Since the alternate hypothesis states that less than 40% of U.S. cell phone owners use their phone for most of their online browsing, therefore we will use a lower tailed test.

Select the test statistic:  

Since the sample size is quite large (n > 30) therefore, we will use Z-distribution.

Set up decision rule:

Since it is a lower tailed test, using a Z statistic at a significance level of 1%

We Reject H₀ if Z < -1.645

We Reject H₀ if p ≤ α

Compute the test statistic:

$ Z =  \frac{\hat{p} - p}{ \sqrt{\frac{p(1-p)}{n} }}  $

$ Z =  \frac{0.31 - 0.40}{ \sqrt{\frac{0.40(1-0.40)}{100} }}  $

$ Z =  \frac{- 0.09}{ 0.048989 }  $

Z = - 1.84

From the z-table, the p-value corresponding to the test statistic -1.84 is

p = 0.03288

Conclusion:

We failed to reject H₀

Z > -1.645

-1.84 > -1.645

We failed to reject H₀

p >  α

0.03 > 0.01

We do not have significant evidence at a 1% significance level to claim that less than 40% of U.S. cell phone owners use their phones for most of their online browsing.

8 0
3 years ago
A biased coin is flipped twice.
Anni [7]

Answer:

0.48.

Step-by-step explanation:

There are 2 ways that a tail lands once:-

Tail + head or

head + tail.

Prob(Tail on one throw) = 0.4

Prob(Head on one throw) = 1 - 0.4 = 0.6.

Prob(Tail first then head) = 0.4 * 0.6 = 0.24

Head then tail has the same probability (0.6*0.4).

So the requred probability = 0.24 + 0.24

= 0.48.

8 0
2 years ago
Please someone I need the right answer will give brainiest if right​
nika2105 [10]

Answer:

C. Because (-3)^2 is NOT equal to -9

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Find two numbers whose difference is 154 and whose product is a minimum.
Serggg [28]
Y - x = 154
let z = xy = x(154 + x) = x^2 + 154x

we need to find the minimum value of z

z' =   2x + 154  which = zero for minm or maxm value

x = -77   and y = 154 -77 = 77

so the 2 numbers are -77 and 77




7 0
3 years ago
What are the solutions to the equation (x – 2)(x + 5) = 0?
Ray Of Light [21]

Answer:

(2,-5)

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Solve this for me plzzz
    12·2 answers
  • HELP!!! I WILL MARK BRAINLIEST IF CORRECT!!
    6·1 answer
  • You decide to make this recipe a week later, but this time you find out that you
    11·2 answers
  • 2 and 1 fourth divided by 3 and 1 fifth simplified
    5·1 answer
  • Which of the following is the major negative aspect of crossover designs for research studies? A. Prohibitive cost B. Residual e
    8·1 answer
  • What 49/9 as a mixed number
    12·1 answer
  • Morita works in a florist shop and makes flower arrangements. She puts 10 flowers in each vase, and 2/10 of the flowers are dais
    10·2 answers
  • What is 398/472 in lowest terms?
    15·1 answer
  • A pizza is 10% off the regular price. The discount is $2. How much was the regular price of the pizza? What is the proper set up
    5·1 answer
  • Jeff is buying books at a used bookstore he wants to approximate the total cost of his purchase before checking out which amount
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!