Can you help me find this out. I have to write it in simplest form 1/5x=4

Mathematics

2 answers:

Rudiy273 years ago

8 0

X=2 because you divide 4by one half

PolarNik [594]3 years ago

7 0

X equal 20 bc 20 over 5 equals 4 bc 4 times 5 equals 20

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A data set lists earthquake depths. The summary statistics are nequals300, x overbarequals5.89 km, sequals4.44 km. Use a 0.01

kirza4 [7]

Answer:

Null hypothesis $H_0:\mu=5.00km$

Alternative hypothesis $H_1:\mu\neq 5.00km$

The p value is 0.000517, which is less than the significance level 0.01, therefore we reject the null hypothesis and conclude that population mean is not equal to 5.00.

Step-by-step explanation:

It is given that a data set lists earthquake depths. The summary statistics are

$n=300$

$\overline{x}=5.89km$

$s=4.44km$

Level of significance = 0.01

We need to test the claim of a seismologist that these earthquakes are from a population with a mean equal to 5.00.

Null hypothesis $H_0:\mu=5.00km$

Alternative hypothesis $H_1:\mu\neq 5.00km$

The formula for z-value is

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

$z=\frac{5.89-5.00}{\frac{4.44}{\sqrt{300}}}$

$z=\frac{0.89}{0.25634351952}$

$z=3.4719$

The p-value for z=3.4719 is 0.000517.

Since the p value is 0.000517, which is less than the significance level 0.01, therefore we reject the null hypothesis and conclude that population mean is not equal to 5.00.

6 0

3 years ago

Idek the answer please help

VashaNatasha [74]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What is 1/8 of 3 please help!!

mr_godi [17]

0.375 , I think that’s right lol