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
Nat2105 [25]
3 years ago
8

What is the formula to find the volume of the solid ?

Mathematics
1 answer:
marysya [2.9K]3 years ago
4 0

Answer:

V = l x w x h

Step-by-step explanation:

You might be interested in
Using the order of operations, what should be done first to evaluate (-2)³ + 4 ÷ (-15 + 9)(3) - 4?
dybincka [34]

Answer:

-14

Step-by-step explanation:

If you simplify the expression you get -14

8 0
3 years ago
Read 2 more answers
a math teacher claims that she has developed a review course that increases the score of students on the math portion of a colle
madam [21]

Answer:

A.

H_0: \mu\leq514\\\\H_1: \mu>514

B. Z=2.255. P=0.01207.

C. Although it is not big difference, it is an improvement that has evidence. The scores are expected to be higher in average than without the review course.

D. P(z>0.94)=0.1736

Step-by-step explanation:

<em>A. state the null and alternative hypotheses.</em>

The null hypothesis states that the review course has no effect, so the scores are still the same. The alternative hypothesis states that the review course increase the score.

H_0: \mu\leq514\\\\H_1: \mu>514

B. test the hypothesis at the a=.10 level of confidence. is a mean math score of 520 significantly higher than 514? find the test statistic, find P-value. is the sample statistic significantly higher?

The test statistic Z can be calculated as

Z=\frac{M-\mu}{s/\sqrt{N}} =\frac{520-514}{119/\sqrt{2000}}=\frac{6}{2.661}=2.255

The P-value of z=2.255 is P=0.01207.

The P-value is smaller than the significance level, so the effect is significant. The null hypothesis is rejected.

Then we can conclude that the score of 520 is significantly higher than 514, in this case, specially because the big sample size.

C.​ do you think that a mean math score of 520 vs 514 will affect the decision of a school admissions adminstrator? in other words does the increase in the score have any practical significance?

Although it is not big difference, it is an improvement that has evidence. The scores are expected to be higher in average than without the review course.

D. test the hypothesis at the a=.10 level of confidence with n=350 students. assume that the sample mean is still 520 and the sample standard deviation is still 119. is a sample mean of 520 significantly more than 514? find test statistic, find p value, is the sample mean statisically significantly higher? what do you conclude about the impact of large samples on the p-value?

In this case, the z-value is

Z=\frac{520-514}{s/\sqrt{n}} =\frac{6}{119/\sqrt{350}} =\frac{6}{6.36} =0.94\\\\P(z>0.94)=0.1736>\alpha

In this case, the P-value is greater than the significance level, so there is no evidence that the review course is increasing the scores.

The sample size gives robustness to the results of the sample. A large sample is more representative of the population than a smaller sample. A little difference, as 520 from 514, but in a big sample leads to a more strong evidence of a change in the mean score.

Large samples give more extreme values of z, so P-values that are smaller and therefore tend to be smaller than the significance level.

8 0
2 years ago
How much more money does it cost to burn trash than to send it to a landfill? Sanitation Costs (per pound) Recycling $30 Landfil
netineya [11]
What does that mean DJDJSJSJS Jen
3 0
2 years ago
If a= .75 and b= .50, what is the perimeter of the rectangle?
Lerok [7]

Answer:

  C.  14 inches

Step-by-step explanation:

The perimeter is double the sum of length and width:

  P = 2((4a +3) +(6b -2) = 8a +12b +2

For the given values, this is ...

  P = 8(0.75) +12(0.50) +2 = 6 + 6 + 2 = 14

The perimeter is 14 inches.

3 0
3 years ago
Please help me, I can't get this question, its for 5th graders, please
Serggg [28]
The two numbers in each column have to add to 23
So under 7 you write 16, above 4 you write 19, etc

The rule will say x + y = 23
8 0
3 years ago
Read 2 more answers
Other questions:
  • Which mixed number is equal to 6.5?
    11·1 answer
  • Which of the following shows the correct solution steps and solution to 3x+2=17?
    15·2 answers
  • Please need help on this
    15·1 answer
  • Multi step equation that equals 10
    9·1 answer
  • QUOTIENT OF 84 AND 6
    9·2 answers
  • I will mark brainliest and give 30 points
    10·2 answers
  • Find the value of x.<br> 7<br> Х<br> 3<br> Z<br> X =√[?]<br><br> Pls help explain !!
    11·1 answer
  • 36 men can compete a piece of work in 18 days in how many days will 27 men compete the same work​
    14·2 answers
  • How many moles of a gas are in a 2.2 liter balloon at 1.3 atm and 85oC?
    6·2 answers
  • (y + 4)^2 – 2(y + 4) + 1
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!