Plz i need help with this

Mathematics

1 answer:

svet-max [94.6K]3 years ago

4 0

Answer:

congruence, corresponding,sum of 180

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if a scatter plot has no association then... A.) it has no ordered psirs B.) its ordered pairs have no predictable pattern C.) i

musickatia [10]

Answer:

If a scatter plot has no association then it's ordered pairs have no predictable pattern.

Step-by-step explanation:

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3 years ago

A total of 326 adult and student tickets were sold for a high school play. The ticket prices were $8 for adults and $5 for stude

Trava [24]

Answer:

212 tickets were sold

Step-by-step explanation:

a (adult) + s (student) = 326

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The miller’s drove 160 miles in four hours to Texas at that rate how far will the millers travel in six hours?

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3 years ago

Read 2 more answers

A simple random sample of 100 8th graders at a large suburban middle school indicated that 87% of them are involved with some ty

UkoKoshka [18]

Answer:

The confidence interval for the mean is given by the following formula:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

And the margin of error is given by:

$ME = 1.96 *\frac{0.87*(1-0.87)}{100} = 0.0659$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value would be given by: