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
creativ13 [48]
2 years ago
5

Help me please please

Mathematics
1 answer:
yanalaym [24]2 years ago
3 0

Answer:

Hold on a sec i cant remember

You might be interested in
1) 2(a + 3) = -12
serg [7]
1)
2(a + 3) = -12
Divide by 2
a + 3 = -6
Subtract 3
a = -9

2)
3(p + 2) = 18
Divide by 3
p + 2 = 6
Subtract 2
p = 4

3)
4(2r + 8) = 88
Dive by 4
2r + 8 = 22
Subtract 8
2r = 14
Divide by 2
r = 7

4)
2(3a + 2) = -8
Divide by 2
3a + 2 = -4
Subtract 2
3a = -6
Divide by 3
a = -2

5)
4(k + 3) = 4
Divide by 4
k + 3 = 1
Subtract 3
k = -2
3 0
3 years ago
Read 2 more answers
Old Faithful in Yellowstone National Park shoots water 60 feet into the air that casts a shadow of 42 feet. What is the height o
Rudiy27
It will be 90 feet considering the water triangle as shown as the figure
5 0
2 years ago
A square pyramid is sliced parallel to the base, as shown. What is the area of the resulting two-dimensional cross-section?
Marina86 [1]
D 120 pls give the brainlist pls pls
7 0
3 years ago
Read 2 more answers
Si f(1)=18 que es f(5)
alexira [117]
F(5)=90 pienso que si
3 0
3 years ago
An article describes an experiment to determine the effectiveness of mushroom compost in removing petroleum contaminants from so
alexgriva [62]

Solution :

Let p_1 and p_2  represents the proportions of the seeds which germinate among the seeds planted in the soil containing 3\% and 5\% mushroom compost by weight respectively.

To test the null hypothesis H_0: p_1=p_2 against the alternate hypothesis  H_1:p_1 \neq p_2 .

Let \hat p_1, \hat p_2 denotes the respective sample proportions and the n_1, n_2 represents the sample size respectively.

$\hat p_1 = \frac{74}{155} = 0.477419

n_1=155

$p_2=\frac{86}{155}=0.554839

n_2=155

The test statistic can be written as :

$z=\frac{(\hat p_1 - \hat p_2)}{\sqrt{\frac{\hat p_1 \times (1-\hat p_1)}{n_1}} + \frac{\hat p_2 \times (1-\hat p_2)}{n_2}}}

which under H_0  follows the standard normal distribution.

We reject H_0 at 0.05 level of significance, if the P-value or if |z_{obs}|>Z_{0.025}

Now, the value of the test statistics = -1.368928

The critical value = \pm 1.959964

P-value = $P(|z|> z_{obs})= 2 \times P(z< -1.367928)$

                                     $=2 \times 0.085667$

                                     = 0.171335

Since the p-value > 0.05 and $|z_{obs}| \ngtr z_{critical} = 1.959964$, so we fail to reject H_0 at 0.05 level of significance.

Hence we conclude that the two population proportion are not significantly different.

Conclusion :

There is not sufficient evidence to conclude that the \text{proportion} of the seeds that \text{germinate differs} with the percent of the \text{mushroom compost} in the soil.

8 0
3 years ago
Other questions:
  • What 3 ratios are equivalent to 20:36
    9·2 answers
  • At 2 seconds, an object's velocity is 23 meters per second. At 9 seconds, the object's velocity is 38 meters per second. Assumin
    5·1 answer
  • The golden state warriors are playing the cleveland cavaliers on thursday june 1, 2017 in game 1 of the nba championship series.
    13·1 answer
  • Plz help on both will give branlyist and thx
    14·1 answer
  • 7 times as much as the sum of 1/3 and 4/5
    10·1 answer
  • Graph the line that represents this equation 3x - 4y = 8
    12·1 answer
  • Simplify.
    11·1 answer
  • Somebody please help me ive been trying for hours
    11·1 answer
  • Can someone please help me with questions 12 through 14 with the answer correct I was trying but I don’t know what I put down is
    10·1 answer
  • Solve for x. Write both solutions separated by a comma. 4x^2-7x-2=0
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!