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Triss [41]
3 years ago
15

2x(squared) + 5 - 2 What is the answer to this trinomial?

Mathematics
2 answers:
Juliette [100K]3 years ago
4 0
The answer is <span>2x + 3. 
</span>
Levart [38]3 years ago
3 0
The answer would be 2x^{2}+3 please mark my responce as brainliest for it will help me.
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An insurance company states that it settles 85% of all life insurance claims within 30 days. A consumer group asks the state ins
BlackZzzverrR [31]

Using the z-distribution, it is found that since the p-value of the test is less than 0.05, we reject the null hypothesis and find that there is enough evidence to conclude that the true proportion of all life insurance claims made to this company that are settled within 30 days is less than 85%.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if there is not enough evidence that the proportion is below 85%, that is:

H_0: p \geq 0.85

At the alternative hypothesis, it is tested if there is enough evidence that the proportion is below 85%, that is:

H_0: p < 0.85

<h3>What is the test statistic?</h3>

The test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

In which:

  • \overline{p} is the sample proportion.
  • p is the proportion tested at the null hypothesis.
  • n is the sample size.

For this problem, the parameters are:

p = 0.85, n = 250, \overline{p} = \frac{203}{250} = 0.812

Hence the test statistic is:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

z = \frac{0.812 - 0.85}{\sqrt{\frac{0.85(0.15)}{250}}}

z = -1.68

<h3>What is the p-value and the conclusion</h3>

Using a z-distribution calculator, with a left-tailed test, as we are testing if the proportion is less than a value, and z = -1.68, the p-value is of 0.0465.

Since the p-value of the test is less than 0.05, we reject the null hypothesis and find that there is enough evidence to conclude that the true proportion of all life insurance claims made to this company that are settled within 30 days is less than 85%.

More can be learned about the z-distribution at brainly.com/question/16313918

#SPJ1

4 0
1 year ago
PLEASE HELP AND EXPLAIN! <br><br> A. y=60x <br> B. y=80x <br> C. y=10x<br> D. y= 6x
Rudik [331]

Answer:

C).

Step-by-step explanation:

One of the points on the graph that the path of bike b crosses is (6,60).

When you divide this to find the unit rate you get 10/1 therefore the equation of bike b= y+10X

8 0
3 years ago
I need help answer ASAP I’m confused
katrin [286]

Answer:

Step-by-step explanation:

You can plug in the 294 for A and solve

4 0
4 years ago
X &lt; -4.8
Kamila [148]

Answer:

D & E

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Yuma missed 5 points out of a possible 100. What decimal number represents the part of the math test she got right.
CaHeK987 [17]

0.95

Consider this question in terms of percentages ( that is, out of 100)

she got 95 questions right → 95% = \frac{95}{100} = 0.95



3 0
3 years ago
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