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
Oksi-84 [34.3K]
3 years ago
6

Jhon has $200 caleb had $800 joan has $100 who has the most

Mathematics
2 answers:
Shtirlitz [24]3 years ago
6 0
John has the most money
dybincka [34]3 years ago
5 0

Answer:

CALEB

Step-by-step explanation:

because 800 is greater than 200 and 100

You might be interested in
mark earned $8 per hour plus and additional $50 in tips waiting tables on saturday. He earned $165 in all.
fomenos

Answer:

242+165=$407 because $8 per hour = $192 in 24 hours

3 0
3 years ago
A doctor released the results of clinical trials for a vaccine to prevent a particular disease. In these clinical​ trials, 200,0
CaHeK987 [17]

Answer:

1) No, there is  not  enough evidence to support the claim that the vaccine was effective (P-value=0.104) .

The null and alternative hypothesis are:

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

being the subindex 1 for the experimental group and subindex 2 for the control group.

2) Test statistic z=-1.26

Step-by-step explanation:

This is a hypothesis test for the difference between proportions.

The claim is that the vaccine was effective.

Then, the null and alternative hypothesis are:

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

The significance level is 0.01.

The sample 1 (experimental group), of size n1=100000 has a proportion of p1=0.0002.

p_1=X_1/n_1=21/100000=0.0002

The sample 2 (control group), of size n2=100000 has a proportion of p2=0.0003.

p_2=X_2/n_2=30/100000=0.0003

The difference between proportions is (p1-p2)=-0.0001.

p_d=p_1-p_2=0.0002-0.0003=-0.0001

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

p=\dfrac{X_1+X_2}{n_1+n_2}=\dfrac{21+30}{100000+100000}=\dfrac{51}{200000}=0.00026

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{0.00026*0.99974}{100000}+\dfrac{0.00026*0.99974}{100000}}\\\\\\s_{p1-p2}=\sqrt{0+0.0000000025}=\sqrt{0.0000000051}=0.000071

Then, we can calculate the z-statistic as:

z=\dfrac{p_d-(\pi_1-\pi_2)}{s_{p1-p2}}=\dfrac{-0.00009-0}{0.000071}=\dfrac{-0.00009}{0.000071}=-1.26

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

P-value=P(z

As the P-value (0.104) is bigger than the significance level (0.01), the effect is not significant.

The null hypothesis failed to be rejected.

There is  not  enough evidence to support the claim that the vaccine was effective.

6 0
3 years ago
Quanto é o resultado e como ae resolve a seguinte operação: 1.205 × 32 Me ajudem preciso para hj.
Elenna [48]

Answer:

la respuesta es 38560

Step-by-step explanation:

5 0
3 years ago
HELP!!!!!! . GIVEN THE INFORMATION BELOW, Fino AC
LekaFEV [45]

Answer:the answer is B

Step-by-step explanation:

8 0
3 years ago
Write a real-world problem that could be solved using a proportion
sweet [91]
What proportion of the pie did my mom eat if 1/2 is left? - That's a question you could use. Hope I helped!!!!!
7 0
3 years ago
Read 2 more answers
Other questions:
  • State whether each of the following functions f have a well-defined inverse or not. Recall that a function has an inverse if, fo
    15·1 answer
  • Which symbol replaces ? To make the statement true?
    11·1 answer
  • What is 3.7 repeating, as a mixed number
    7·2 answers
  • Which statement describes the solution to the equation a+5(2a−1)+3=11a−2 ?
    10·2 answers
  • A laundry basket contains socks in several different colors. black 70 white 26 red 4 What is the probability that a randomly sel
    7·2 answers
  • What is the point-slope equation of the line with slope
    15·2 answers
  • Evaluate z^2−3z+4, when z = −4
    14·2 answers
  • Hurry i need help!!
    15·1 answer
  • Join our among us. <br><br> code;<br> S CQUEFF
    5·1 answer
  • Rubin has 6 rolls of pennies containing 50 coins each
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!