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
Leto [7]
3 years ago
15

Select the correct answer.

Mathematics
1 answer:
adelina 88 [10]3 years ago
4 0

Answer:

C

Step-by-step explanation:

When ever a problem gives information about parallel lines, look for Alternate Interior angles.

You might be interested in
Solve logarithmic equation: ln a=4 HELP
Olin [163]
What’s the question lol
5 0
2 years ago
A billing company that collects bills for​ doctors' offices in the area is concerned that the percentage of bills being paid by
omeli [17]

Answer:

1) A. H0: p = 0.30

HA: p not equal to 0.30

2) A. The Independence Assumption is met.

C. The Randomization Condition is met.

D. The Success/Failure Condition is met.

3) Test statistic z = 2.089

P-value = 0.0367

4) C. Reject H0. There is sufficient evidence to suggest that the percentage of bills paid by medical insurance has changed.

Step-by-step explanation:

1) This is a hypothesis test for a proportion.

The claim is that there is a significant change in the percent of bills being paid by medical​ insurance.

As we are looking for evidence of a difference, no matter if it is higher or lower than the null hypothesis proportion, the alternative hypothesis is defined by a unequal sign.

Then, the null and alternative hypothesis are:

H_0: \pi=0.3\\\\H_a:\pi\neq 0.3

2) Cheking the conditions:

The independence assumption and the randomization condition are met as the bills were selected randomly from the population.

The 10% condition can not be checked, as we do not know the size of the population.

The success/failure condition is met as the products np and n(1-p) are bigger than 10 (the number of successes and failures are both bigger than 10).

3) The significance level is assumed to be 0.05.

The sample has a size n=9260.

The sample proportion is p=0.31.

 

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.3*0.7}{9260}}\\\\\\ \sigma_p=\sqrt{0.000023}=0.005

Then, we can calculate the z-statistic as:

z=\dfrac{p-\pi-0.5/n}{\sigma_p}=\dfrac{0.31-0.3-0.5/9260}{0.005}=\dfrac{0.01}{0.005}=2.089

This test is a two-tailed test, so the P-value for this test is calculated as:

\text{P-value}=2\cdot P(z>2.089)=0.0367

As the P-value (0.0184) is smaller than the significance level (0.05), the effect is  significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that there is a significant change in the percent of bills being paid by medical​ insurance.

5 0
3 years ago
What will be the radius of the pony’s path?
Olenka [21]
17 I think... not sure bout this one not sure about this one not to sure about this one
7 0
3 years ago
Read 2 more answers
Use a calculator to approximate sin 6° and round to<br> four decimal places.
Lesechka [4]

Answer:

0.2794

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the value of the digit 8 in Alaska's population
Yuri [45]
Well I found the number that you are referring to: (686,293) right?
anyway,I'm assuming that it's talking about the number 8 in the number which would be the Ten Thousands place.

7 0
3 years ago
Other questions:
  • What is the midpoint of the x-intercepts of<br> f(x) = (x – 4)(x + 4)?
    10·2 answers
  • Last week you watch four hours of TV this week you watched eight hours TV place points on the graph to show your activity for la
    5·1 answer
  • Y = -x + 3<br> slope =<br> y-intercept =
    9·2 answers
  • The maximum weight for an elevator is 1600 pounds. You need to move boxes each weighing 40 pounds, and you weigh 145 pounds. Wri
    14·2 answers
  • Solve for y: x/y - 8 = w
    10·1 answer
  • Define the simplest form of a rate
    13·1 answer
  • Solve the following system of equations
    15·1 answer
  • Jazmin takes a ride share service home from the airport. The ride share service charges $5 as an initial cost to pick her up, an
    13·1 answer
  • Brainliest!!!!!marking&lt;—
    15·2 answers
  • New York City is approximately 4.68×10²square miles. Los Angeles is 503 square miles.How many times larger is Los Angeles in New
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!