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
V125BC [204]
2 years ago
6

Help pls step by step explanation and awnser

Mathematics
1 answer:
docker41 [41]2 years ago
6 0

Answer:

Notice that 2 sheets of stamps will NOT be enough because 2 sheets have a total of 40 stamps and NOT 47

Step-by-step explanation:

You might be interested in
Is 7.525225222....... rational or irrational ?
ankoles [38]

Answer:

It is irrational

Step-by-step explanation:

7.525225222....... is non terminating non reoccurring

Therefore it is irrational

3 0
3 years ago
The scale model of a rectangular patio will be enlarged by a scale factor of 2.5 to create the actual patio. The actual patio wi
cricket20 [7]

Step-by-step explanation:

Below is an attachment containing the solution.

7 0
3 years ago
Read 2 more answers
Advandia is a drug used to treat diabetes, but it may cause an increase in heart attacks among a population already susceptible.
sergiy2304 [10]

Answer:

a) The proportions are not form matched-pairs data.

b) The null hypothesis failed to be rejected.

There is  not enough evidence to support the claim that there is evidence of a significant increase in the proportion of people who suffer heart attacks when using Avandia compared to other treatments.

Step-by-step explanation:

a) Two data sets are "paired" when the following one-to-one relationship exists between values in the two data sets:

  • Each data set has the same number of data points.
  • Each data point in one data set is related to one, and only one, data point in the other data set.

None of this conditions apply in this case, so the proportions are not form matched-pairs data.

b) This is a hypothesis test for the difference between proportions.

The claim is that there is evidence to suggest that there is a significant increase in the proportion of people who suffer heart attacks when using Avandia compared to other treatments.

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 0.05.

The sample 1 (Avindia treatment), of size n1=1456 has a proportion of p1=0.0185.

p_1=X_1/n_1=27/1456=0.0185

The sample 2 (other treatment), of size n2=2895 has a proportion of p2=0.0142.

p_2=X_2/n_2=41/2895=0.0142

The difference between proportions is (p1-p2)=0.0044.

p_d=p_1-p_2=0.0185-0.0142=0.0044

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

p=\dfrac{X_1+X_2}{n_1+n_2}=\dfrac{27+41}{1456+2895}=\dfrac{68}{4351}=0.0156

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{0.0156*0.9844}{1456}+\dfrac{0.0156*0.9844}{2895}}\\\\\\s_{p1-p2}=\sqrt{0.00001+0.00001}=\sqrt{0.00002}=0.004

Then, we can calculate the z-statistic as:

z=\dfrac{p_d-(\pi_1-\pi_2)}{s_{p1-p2}}=\dfrac{0.0044-0}{0.004}=\dfrac{0.0044}{0.004}=1.1

 

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

P-value=P(z>1.1)=0.1358

As the P-value (0.1358) is bigger than the significance level (0.05), the effect is not significant.

The null hypothesis failed to be rejected.

There is  not enough evidence to support the claim that there is evidence to suggest that there is a significant increase in the proportion of people who suffer heart attacks when using Avandia compared to other treatments.

8 0
3 years ago
Read 2 more answers
a random sample of 20 high school students was surveyed and asked "how long does it take you to get ready for school in the morn
Ksivusya [100]

Answer:

where are the choices

Step-by-step explanation:


8 0
3 years ago
Louis age is three years more than twice the age of Sánchez . The sum of their ages is 39. How old are Sánchez and Louis ?
Elden [556K]

Answer:

39 divided by 3 = 13+3=16 therefore Louis is 16 and sanchez i

Step-by-step explanation:

s going to be 23 years of age. Because 39-16=23

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the expressions are equivalent to the one below? Check all that apply.
    15·2 answers
  • Why does multiply numbers by 10 move the decimal point to the right but multiplying by 0.10 move the decimal point to the left
    14·2 answers
  • Whats 2/5 + 1/3 please answer quickly
    15·2 answers
  • 1....1/4 y + 1 1/2 + 2-1 3/4 y -12<br><br> 2....5=1/5x-3<br><br> 3....1/2 h + 1 from 3/4 h +4
    10·2 answers
  • 33 1/3% of what number is 32?
    14·2 answers
  • How to expand 5 (y + 4)
    7·2 answers
  • HELP!! Shelley creates a logo using two similar icicle triangle shown below what is the length of side s in centimeters
    6·1 answer
  • Please help it due asap <br> Helppppppp
    10·1 answer
  • Synthetic Substitution <br><br><br> (x+y)(x^2-xy+y^2)
    7·1 answer
  • The volume, V, of a cylinder is V=r²h, where r is the
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!