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3 years ago

Need help please quick

Mathematics

2 answers:

Charra [1.4K]3 years ago

5 0

Every 2 games they lost 10

Triss [41]3 years ago

4 0

Answer: For every 2 games won there 10 games lost

Step-by-step explanation:

Hope I helped

-Hunter Cross

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Write an equation for this math problem

mote1985 [20]

Answer:

0 + 5 - 10

Step-by-step explanation:

You move five spaces forward and ten spaces backwards

7 0

3 years ago

The yearbook committee polled 80 randomly selected students from a class of 320 ninth graders to see if they would be willing to

Anon25 [30]

Using the z-distribution, as we are working with a proportion, it is found that the margin of error for the 90% confidence interval is of 0.0524 = 5.24%.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which:

$\pi$ is the sample proportion.

z is the critical value.

n is the sample size.

The margin of error is given by:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

In this problem, the critical value is given as z = 1.645, and since 26 out of 80 students said they would be willing to pay extra:

$n = 80, \pi = \frac{26}{80} = 0.325$

Then, the <em>margin of error</em> is of:

$M = 1.645\sqrt{\frac{0.325(0.675)}{80}} = 0.0524$

More can be learned about the z-distribution at brainly.com/question/25890103

5 0

3 years ago

A statistician wants to determine the relationship between typing speed, in words per minute, and the time, in minutes, it takes

wlad13 [49]

The way that the correlation will be affected if the units are changed from minutes to seconds is that the correlation will still be the same.

<h3>What is correlation?</h3>

Correlation simply means a statistical measure which expresses the extent to which two variables are linearly related.

From the information, it was stated that twenty-five trials are completed and the correlation coefficient between typing speed and time is determined to be -0.622.

In this case, even when the units for time are changed from minutes to seconds, the correlation won't change. This is because the change in units has no effect on the correlation.

Learn more about correlation on:

brainly.com/question/4219149

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3 years ago

karim sent a chain email to 10 of his friends. the number of people who got the email increases by a factor of 1.4 every week. w

Alinara [238K]

Answer:

$P(6) = 10(1.4)^{6} = 75.2$