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3 years ago

Multiple choice question

Mathematics

2 answers:

Elden [556K]3 years ago

7 0

I'm fairly certain the answer is B.

PolarNik [594]3 years ago

6 0

The answer is B -2X^2 -24X -73

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You and your four friends are going to a concert. The total price for the tickets was $118.75 which includes a $10 service fee.

Alex787 [66]

Answer:475

Step-by-step explanation:

118.75 is the cost whitch includes a 10$ service fee

118.75x10=475

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3 years ago

A car travels at the speed of 65 miles per hour. going through construction, it travels at 3/5 this speed. write thsi decimal as

zhuklara [117]

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4 years ago

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3 years ago

Use n for " a number " three increased by the quotient of a number and two

Naily [24]

Answer:

$3+\dfrac{n}{2}$

Step-by-step explanation:

Let the number is n.

ATQ,

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Something is increased means plus.

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3 years ago

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