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
zysi [14]
2 years ago
15

What is the solution of -83=b/4

Mathematics
1 answer:
Gre4nikov [31]2 years ago
6 0
I believe it is -332.
(-83= -332 ÷ 4)

You might be interested in
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
Evaluate: 2·5\4^-2 <br> A) 5\8 B<br> B) 8\5 <br> C) 40 <br> D) 160
alexandr402 [8]
D. 160 you simplify the expression to get your answer.
3 0
3 years ago
Read 2 more answers
Negative five-fourths times a number and six is less than twelve.​
kodGreya [7K]

Answer:

-5/4x +6 < 12

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
These are the first six terms of a sequence with a = 2:
SpyIntel [72]

Answer:

<h2>an+1 = 2×7ⁿ</h2>

Step-by-step explanation:

98÷14

=7

686÷98

=7

4 802÷686

=7

33 614÷4 802

=7

Then the common ratio q for this sequence is 7

recursive formula : an+1 = q×an = ?

an= a1 × qⁿ⁻¹

   =2×7ⁿ⁻¹

 

an+1 = q×an

        = 7×(2×7ⁿ⁻¹)

       = 2×7ⁿ

3 0
3 years ago
Read 2 more answers
on monday, a parking garage was 60% full, with 120 cars parked. on tuesday, there were 30 more cars parked jn the garage than th
vlada-n [284]

Answer:

75%

Step-by-step explanation:

we know that 60% of x is 120. we can rewrite this to .6x = 120, to get x we divide both sides by .6, so x = 200. now 120 + 30 = 150. then we divide 150 out of 200 which is .75 it 75%

8 0
3 years ago
Other questions:
  • Three pairs of shoes are priced at $39.95 each.
    15·1 answer
  • I need help on 25. I know the answer is 2a but I need to see the work. Please help I’ve tried so many possibilities.
    13·2 answers
  • Select the postulate that is illustrated for the real numbers 6×12=12×6
    8·1 answer
  • 1,000,000+2,000,000 Equals?
    13·2 answers
  • Please HELP<br> MEEE!!!!!!!!!!
    13·1 answer
  • Can someone please explain to me in detail on how to do this please?
    12·1 answer
  • WORTH 50 POINTS!!!
    11·1 answer
  • Which sentence correctly compares the number of 1 4 4 1 ​ -pound and 1 2 2 1 ​ -pound packages that the deli can slice from a 12
    15·1 answer
  • The sum of the lengths of is 25.82 cm. The length of is 5 cm and the length of is 14.7 cm. What is the length of and what kind o
    8·1 answer
  • How can i explain to children what the length of 2000 feet looks like to children
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!