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Leya [2.2K]
3 years ago
15

In a random and independent sample of 1000 students 80% of them were in favor of longer hours at the school library.

Mathematics
1 answer:
Semmy [17]3 years ago
5 0

Answer:

20 MOE

Step-by-step explanation:

yes

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Someone help please.
malfutka [58]

Answer:

$27

Step-by-step explanation:

If the table was marked up 125%, you can find the retail price of it this way:

20 + 1.25(20) = retail price

$45 = retail price.

To find 40% off of that, use

$45 - .4($45) = sale price

$27 = sale price (aka discount price)

5 0
3 years ago
PLEASE ANSWER i WILL PUT MOST BRAINLIEST!
galina1969 [7]

Answer:

The correct option is;

c. Because the p-value of 0.1609 is greater than the significance level of 0.05, we fail to reject the null hypothesis. We conclude the data provide convincing evidence that the mean amount of juice in all the bottles filled that day does not differ from the target value of 275 milliliters.

Step-by-step explanation:

Here we have the values

μ = 275 mL

275.4

276.8

273.9

275

275.8

275.9

276.1

Sum = 1928.9

Mean (Average), = 275.5571429

Standard deviation, s = 0.921696159

We put the null hypothesis as H₀: μ₁ = μ₂

Therefore, the alternative becomes Hₐ: μ₁ ≠ μ₂

The t-test formula is as follows;

t=\frac{\bar{x}-\mu }{\frac{s}{\sqrt{n}}}

Plugging in the values, we have,

Test statistic = 1.599292

t_{\alpha /2} at 7 - 1 degrees of freedom and α = 0.05 = ±2.446912

Our p-value from the the test statistic = 0.1608723≈ 0.1609

Therefore since the p-value = 0.1609 > α = 0.05, we fail to reject our null hypothesis, hence the evidence suggests that the mean does not differ from 275 mL.

4 0
3 years ago
The equation h(t)=−16t2+19t+110 gives the height of a rock, in feet, t seconds after it is thrown from a cliff. What is the init
Gwar [14]
Did you ever get this answer?? I really need it

4 0
3 years ago
Read 2 more answers
Write an equation of the line passing through the points ( -5, -25 ),(0,0), and( 3,15)?
Akimi4 [234]

Answer:

Y=5X because the slope is 5 and the Y-intercept is 0

6 0
2 years ago
One of the legs of a right triangle measures 2 cm and its hypotenuse measures 18 cm.
denpristay [2]

Answer:

17.9

Step-by-step explanation:

4 0
2 years ago
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