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3 years ago

Which statement describes the difference in energy between an ice cube and liquid water.

1 answer:

6 0

Ice cubes are solid witch gives it less energy than i liquad for example if ice thoches a wire than it well take time for effect but if water touches water it comes in effect way faster

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In 12 hours, how many more kilometers could the yellow car go than the red car? show your work

trasher [3.6K]

Answer:

144

Step-by-step explanation:

12 times 12

3 0

3 years ago

Simplify 2−4÷2+2^3 Please help

mars1129 [50]

Divide then multiply then do left to right

8 0

3 years ago

Rogério, a graphic artist, after paying all the expenses in his monthly budget, has a monthly net cash flow of $248. He has deci

alex41 [277]

The correct answer would be C.

9 0

3 years ago

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Assume that a simple random sample has been selected from a normally distributed population. Find the test statistic t.

lawyer [7]

Using the t-distribution, it is found that the p-value of the test is 0.007.

At the null hypothesis, it is tested if the mean lifetime is not greater than 220,000 miles, that is:

$H_0: \mu \leq 220000$

At the alternative hypothesis, it is tested if the mean lifetime is greater than 220,000 miles, that is:

$H_1: \mu > 220000$ .

We have the standard deviation for the sample, thus, the t-distribution is used. The test statistic is given by:

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

The parameters are:

$\overline{x}$ is the sample mean.
$\mu$ is the value tested at the null hypothesis.
s is the standard deviation of the sample.
n is the sample size.

For this problem:

$\overline{x} = 226450, \mu = 220000, s = 11500, n = 23$

Then, the value of the test statistic is:

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

$t = \frac{226450 - 220000}{\frac{11500}{\sqrt{23}}}$

$t = 2.69$

We have a right-tailed test(test if the mean is greater than a value), with t = 2.69 and 23 - 1 = 22 df.

Using a t-distribution calculator, the p-value of the test is of 0.007.

A similar problem is given at brainly.com/question/13873630

8 0

2 years ago

Which number sentence is not true

Bad White [126]

C C because the absolute value of -100 is 100 which is greater than zero

3 0

3 years ago

Read 2 more answers