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3 years ago

A jar contains 4 white marbles, 6 red marbles, 8 black marbles and 2 green marbles. If a marble is

Mathematics

1 answer:

klemol [59]3 years ago

7 0

Answer:

probably a good chance.

Step-by-step explanation:

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Pls help, my teacher is putting grades in today

arsen [322]

Answer:

Step-by-step explanation:

Printers : 2, 4, 8, 16

Computers : 5, 10, 20, 40

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5 0

3 years ago

In 25 words or fewer, compare the mathematical and algebraic<br><br> expressions.

DedPeter [7]

Answer:

use own words

Step-by-step explanation:

An expression is just a mathematical phrase. In this tutorial, you'll learn about two popular types of expressions: numerical and algebraic expressions. A numerical expression contains numbers and operations. An algebraic expression is almost exactly the same except it also contains variables.

in mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number)

5 0

3 years ago

Jocelyn expects her new software company to increase its sales next year 2 3/4 times its present value. Write this increase as a

igor_vitrenko [27]

You mean as a percent

4 0

3 years ago

Read 2 more answers

Which equation correctly shows the absoulte vaule of -8

olga2289 [7]

Answer:

|-8|=8

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

A school authority claims that the average height of students is 178 cm. A researcher has taken a well-designed survey and his s

Hunter-Best [27]

Answer:

d) The difference exists due to chance since the test statistic is small

Step-by-step explanation:

From the given information:

Population mean = 178 cm

the sample mean = 177.5 cm

the standard deviation = 2

the sample size = 25

The null hypothesis and the alternative hypothesis can be computed as:

Null hypothesis:

$H_o: \mu = 178$

Alternative hypothesis:

$H_1: \mu \neq 178$

The t-test statistics is determined by using the formula:

$t = \dfrac{X - \mu}{\dfrac{\sigma}{\sqrt{n}}}$

$t = \dfrac{177.5 - 178}{\dfrac{2}{\sqrt{25}}}$

$t = \dfrac{-0.5}{\dfrac{2}{5}}}$

$\mathbf{t= -1.25}$

Degree of freedom df = n- 1

Degree of freedom df = 25 - 1

Degree of freedom df = 24

At the level of significance ∝ = 0.05, the critical value = 2.064

Decision rule: To reject the null hypothesis if the test statistics is greater than the critical value at 0.05 level of significance

Conclusion: We fail to reject the null hypothesis since the test statistics is lesser than the critical value and we conclude that the difference exists due to chance since the test statistic is small

5 0

3 years ago