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trapecia [35]
3 years ago
11

g An article reported the results of a survey of 400 elementary school teachers and 500 high school teachers. Of the elementary

school teachers, 100 said they were very satisfied with their jobs, whereas 200 of the high school teachers were very satisfied with their work. We wish to do hypothesis testing to check that true proportion of elementary school teachers and high school teachers who were very satisfied with their jobs differs from each other. Write the formula and calculate the value of the estimate of the standard error of the sample statistics, you would use in finding test statistic, assuming null hypothesis is true. ( Round your answer to 3 decimal places)
Mathematics
1 answer:
daser333 [38]3 years ago
4 0

Answer:2020

Step-by-step explanation:horrible year just grinding points btw

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Recipe ingredients remain jn a constant ratio no matter how many serving are prepared. Which table shows a possible ratio table
djverab [1.8K]

Answer:

The last table (the bottom one)

Step-by-step explanation:

The ingredients having the same ratio means that, for every number of servings, we should have:

Y/X = constant.

So, for the first table when we have 1 serving, the quotient is:

Y/X = 2/1 = 2

when we have two servings:

Y/X = 3/2 = 1.5

The ratios are different.

Then this is not the correct option.

For the second table, when we have 1 serving the ratio is:

Y/X = 2/1 = 2

when we have two servings:

Y/X = 4/2 = 2

when we have 3 servings:

Y/X = 8/3 = 2.66

This is not the correct option.

For the third table:

1 serving:

Y/X = 2/1 = 2

2 sevings

Y/X = 3/2 = 1.5

This is not the correct option.

fourth table:

1 serving:

Y/X = 2/1 = 2

2 servings

Y/X = 4/2 = 2

3 servings

Y/X = 8/4 = 2

Here we can see that the ratio is always the same, then the ratio remains constant.

This is the table that shows a possible ratio for ingredients X and Y,

5 0
3 years ago
Find the product (8x+2)(7x+4)
noname [10]

Answer:

It's in the doc below

Step-by-step explanation:

Hope it helps

4 0
3 years ago
Read 2 more answers
Question 1
Shkiper50 [21]

Answer:

Let's begin with a 30°-60°-90° triangle. A 30°-60°-90° triangle with a hypotenuse of 2 um

Step-by-step explanation:

6 0
2 years ago
The product of twice a number and four is the same as the difference of seven times the number and 5/3
gavmur [86]

Answer:

2N÷4=7N-5/3

Hope this helps!

6 0
3 years ago
Please help. Thank you
erastova [34]

Answer:

(1, -12)

Step-by-step explanation:

x is the horizontal axis and y is the vertical axis.

The current coordinates of D are (-5, -2).

Translated...

D = (-5 + 6, -2 - 10)

D = (1, -12)

3 0
3 years ago
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