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pentagon [3]
3 years ago
14

Determine whether the function is a polynomial function. If it​ is, identify the degree.

Mathematics
1 answer:
Genrish500 [490]3 years ago
4 0
Is there a picture combined to this
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A recent survey showed that in a sample of 100 elementary school teachers, 15 were single. In a sample of 180 high school teache
trapecia [35]

Answer:

By using hypothesis test at α = 0.01, we cannot conclude that the proportion of high school teachers who were single greater than the proportion of elementary teachers who were single

Step-by-step explanation:

let p1  be the proportion of elementary teachers who were single

let p2 be the proportion of high school teachers who were single

Then, the null and alternative hypotheses are:

H_{0}: p2=p1

H_{a}: p2>p1

We need to calculate the test statistic of the sample proportion for elementary teachers who were single.

It can be calculated as follows:

\frac{p(s)-p}{\sqrt{\frac{p*(1-p)}{N} } } where

  • p(s) is the sample proportion of high school teachers who were single (\frac{36}{180} =0.2)
  • p is the proportion of elementary teachers who were single (\frac{15}{100} =0.15)
  • N is the sample size (180)

Using the numbers, we get

\frac{0.2-0.15}{\sqrt{\frac{0.15*0.85}{180} } } ≈ 1.88

Using z-table, corresponding  P-Value is ≈0.03

Since 0.03>0.01 we fail to reject the null hypothesis. (The result is not significant at α = 0.01)

8 0
3 years ago
Ryan has a $500 bond with a 6.5% coupon. How much interest will Ryan
oee [108]
D. Is the correct answer
3 0
3 years ago
Read 2 more answers
Last month, he sold 50 chickens and 30 ducks for $550. This month, he sold 44 chickens and 36 ducks for $532. How do you solve t
Citrus2011 [14]

Answer:

sorry im not sure about the answer but this is how you figure it out

Step-by-step explanation:

50a+30b=550

after you simplify = 5a+3b=55

44a+36b=532

after you simplify=11a+9b=133

then you try to find a number

5a+3b=55

then you have to find different possibilities of a and b and if it can fit into both equations then it is correct

3 0
3 years ago
Read 2 more answers
Consider the original trapezoid and the enlargement.
Vika [28.1K]

Answer:

12

Step-by-step explanation:

2x4=8

5x4=20

2x4=8

each side is multipled by 4

3 0
3 years ago
Of the 630 seats in the cafeteria 70% earners how many seats are being used
stepladder [879]

Answer:

441 seats are being used :]

Step-by-step explanation:

4 0
3 years ago
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