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2 years ago

A man flys out of Korea on Wednesday at 4:30pm and lands in Colorado on Wednesday at 4:15pm how does he do it

2 answers:

8 0

Well there is a time difference between Korea and Colorado. So when the man leaves Korea it is 4:30 pm but when he reaches Colorado the next day, it is 4:15 pm. I hope this helps you!

meriva2 years ago

4 0

It is the time difference. Colorado time zone is MDT (Mountain Daylight Time) and KST is Korea Standard Time

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WILL MARK BRAINLIEST ASAP PLEASE

ohaa [14]

Answer:

Step-by-step explanation:

90×(2)

= 180

each mile is equal to 90 calories

therefore 2 miles is equal to 180

8 0

1 year ago

A coin is thrown independently 10 times to test the hypothesis that the probability of heads is 0.5 versus the alternative that

mafiozo [28]

Answer:

(a) The significance level of the test is 0.002.

(b) The power of the test is 0.3487.

Step-by-step explanation:

We are given that a coin is thrown independently 10 times to test the hypothesis that the probability of heads is 0.5 versus the alternative that the probability is not 0.5.

The test rejects the null hypothesis if either 0 or 10 heads are observed.

Let p = probability of obtaining head.

So, Null Hypothesis, $H_0$ : p = 0.5

Alternate Hypothesis, $H_A$ : p $\neq$ 0.5

(a) The significance level of the test which is represented by $\alpha$ is the probability of Type I error.

Type I error states the probability of rejecting the null hypothesis given the fact that the null hypothesis is true.

Here, the probability of rejecting the null hypothesis means we obtain the probability of observing either 0 or 10 heads, that is;

P(Type I error) = $\alpha$

P(X = 0/ $H_0$ is true) + P(X = 10/ $H_0$ is true) = $\alpha$

Also, the event of obtaining heads when a coin is thrown 10 times can be considered as a binomial experiment.

So, X ~ Binom(n = 10, p = 0.5)

P(X = 0/ $H_0$ is true) + P(X = 10/ $H_0$ is true) = $\alpha$

$\binom{10}{0}\times 0.5^{0} \times (1-0.5)^{10-0} +\binom{10}{10}\times 0.5^{10} \times (1-0.5)^{10-10}$ = $\alpha$

$(1\times 1\times 0.5^{10}) +(1 \times 0.5^{10} \times 0.5^{0})$ = $\alpha$

$\alpha$ = 0.0019

So, the significance level of the test is 0.002.

(b) It is stated that the probability of heads is 0.1, and we have to find the power of the test.

Here the Type II error is used which states the probability of accepting the null hypothesis given the fact that the null hypothesis is false.

Also, the power of the test is represented by (1 - $\beta$ ).

So, here, X ~ Binom(n = 10, p = 0.1)

$1-\beta$ = P(X = 0/ $H_0$ is true) + P(X = 10/ $H_0$ is true)

$1-\beta$ = $\binom{10}{0}\times 0.1^{0} \times (1-0.1)^{10-0} +\binom{10}{10}\times 0.1^{10} \times (1-0.1)^{10-10}$

$1-\beta$ = $(1\times 1\times 0.9^{10}) +(1 \times 0.1^{10} \times 0.9^{0})$

$1-\beta$ = 0.3487

Hence, the power of the test is 0.3487.

3 0

2 years ago

3 intersecting lines are shown. A line contains points E, D, A, and B. Another line intersects the line at point A and contains

GREYUIT [131]

Answer:

The one with arrows are the answers

->Line segment E B is bisected by Line segment D F .

->A is the midpoint of Line segment F C .

Line segment F C bisects Line segment D B.

->Line segment E B is a segment bisector.

->FA = One-halfFC.

Line segment D A is congruent to Line segment A B .

Step-by-step explanation:

I did it on edge and got it right

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2 years ago

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Thirty coins,all dimes and nickels,are worth $2.60. How many nickels are there?

quester [9]

Answer: 12 nickels

Step-by-step explanation:

4 0

2 years ago

What is 14% of $59.99 and how do I figure this problem?

serious [3.7K]

Is/of =%/100 so x/59.99=14%/100 Cross multiply to get the answe

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2 years ago

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