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
SVEN [57.7K]
3 years ago
15

Plz help I need answer​

Mathematics
1 answer:
kati45 [8]3 years ago
3 0

Answer:

Whats the audio

Step-by-step explanation:

Oh....ok

You might be interested in
Solve the equation below<img src="https://tex.z-dn.net/?f=%5Csqrt%5B5%5D%7B27%28x-2%29%7D%3D3" id="TexFormula1" title="\sqrt[5]{
Mariana [72]

Answer:

x = 11

Step-by-step explanation:

Raising both sides to the fifth power, we get:

27(x - 2) = 3⁵

x - 2 = 3⁵ / 27

x - 2 = 3⁵ / 3³

x - 2 = 3⁽⁵⁻³⁾ = 3² = 9

x = 11

8 0
3 years ago
Graph line y=-1/5x-5 with y and x points
weqwewe [10]

Answer:

Please see picture below.

Step-by-step explanation:

8 0
1 year ago
What is the product to 20×1.59
mote1985 [20]

Answer:

The correct answer is 31.8

Step-by-step explanation:

HAVE A GOOD DAY!

7 0
2 years ago
A researcher finds that of 1000 people who said that they attend a religious service at least once a week, A stopped to help a p
Ne4ueva [31]

Answer:

There is enough evidence to support the claim that the proportions are not equal. (P-value: 0.048).

Step-by-step explanation:

The question is incomplete:

<em>"A researcher finds that of 1000 people who said that they attend a religious service at least once a week, 31 stopped to help a person with car trouble. Of 1200 people interviewed who had not attended a religious service at least once a month, 22 stopped to help a person with car trouble. At the 0.05 significance level, test the claim that the two proportions are different."</em>

This is a hypothesis test for the difference between proportions.

The claim is that the proportions are not equal.

Then, the null and alternative hypothesis are:

H_0: \pi_1-\pi_2=0\\\\H_a:\pi_1-\pi_2\neq 0

The significance level is 0.05.

The sample 1, of size n1=1000 has a proportion of p1=0.031.

p_1=X_1/n_1=31/1000=0.031

The sample 2, of size n2=1200 has a proportion of p2=0.018.

p_2=X_2/n_2=22/1200=0.018

The difference between proportions is (p1-p2)=0.013.

p_d=p_1-p_2=0.031-0.018=0.013

The pooled proportion, needed to calculate the standard error, is:

p=\dfrac{X_1+X_2}{n_1+n_2}=\dfrac{31+22}{1000+1200}=\dfrac{53}{2200}=0.024

The estimated standard error of the difference between means is computed using the formula:

s_{p1-p2}=\sqrt{\dfrac{p(1-p)}{n_1}+\dfrac{p(1-p)}{n_2}}=\sqrt{\dfrac{0.024*0.976}{1000}+\dfrac{0.024*0.976}{1200}}\\\\\\s_{p1-p2}=\sqrt{0+0}=\sqrt{0}=0.007

Then, we can calculate the z-statistic as:

z=\dfrac{p_d-(\pi_1-\pi_2)}{s_{p1-p2}}=\dfrac{0.013-0}{0.007}=\dfrac{0.013}{0.007}=1.98

This test is a two-tailed test, so the P-value for this test is calculated as (using a z-table):

P-value=2\cdot P(z>1.98)=0.048

As the P-value (0.048) 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 the proportions are not equal.

6 0
3 years ago
Paula traveled 65 miles per hour for 2.5 hours and then traveled 45 miles per hour for 3.5 hours what is the total distance in m
Naddik [55]

Answer:

320

Step-by-step explanation:

(45*3.5)+(65*2.5)=320

8 0
3 years ago
Other questions:
  • A particular computer takes 15 minutes to download a 45 minute tv show . How long will it take the computer to download a 1.5 yo
    14·1 answer
  • Alice wants to get enough tile to cover the kitchen and bathroom without appliances in them so they can use the extra for repair
    8·2 answers
  • What is the difference between linear pair supplementary angle and straight angle?
    8·1 answer
  • What does 'three more' mean?
    14·2 answers
  • Lauren is a college sophomore majoring in business. This semester Lauren is taking courses in accounting, economics, management
    14·1 answer
  • Find Y <br>.............. ​
    9·1 answer
  • WILL MARK BRAINLIEST
    14·1 answer
  • Please help with this question! Look at the images, there are two you have to answer!! PLEASE HELP!
    10·1 answer
  • I need coffee... seriously...
    5·2 answers
  • Louis bought packages of donuts. There were 4 donuts in each packages, and Louis gave 6 to his friend. Write an expression to sh
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!