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3 years ago

Seven times a number minus the number is -48.

Mathematics

2 answers:

Ira Lisetskai [31]3 years ago

7 0

Answer:

x = -8.

Step-by-step explanation:

If the number is x then:

7x - x = -48

6x =-48

x = -8.

DENIUS [597]3 years ago

5 0

Same as the other one :) if u thought my answers were helpful to you please mark me as brainliest :)

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Inductive reasoning has to do with coming to a certain prediction or a conclusion based on multiple true premises.
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3 years ago

A drug company is considering marketing a new local anesthetic. The effective time of the anesthetic the drug company is current

lapo4ka [179]

Using the z-distribution, we have that:

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$H_0: \mu = 7.4$

$H_1: \mu < 7.4$

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b) Since the test statistic is less than the critical value for the left-tailed test, there is enough evidence to conclude that the null hypothesis will be rejected.

Item a:

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$H_0: \mu = 7.4$

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$z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}$

The parameters are:

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$\mu$ is the value tested at the null hypothesis.

$\sigma$ is the standard deviation of the sample.

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$z = \frac{7.1 - 7.4}{\frac{1.2}{\sqrt{36}}}$

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Item b:

Since the test statistic is less than the critical value for the left-tailed test, there is enough evidence to conclude that the null hypothesis will be rejected.

You can learn more about the use of the z-distribution to test an hypothesis at brainly.com/question/16313918

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