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2 years ago

Please help ASAP. I really need help on this one

Mathematics

1 answer:

In-s [12.5K]2 years ago

8 0

Answer:

Step-by-step explanation:

In a chemical reaction, the atoms and molecules produced by the reaction are called products. In a chemical reaction, only the atoms present in the reactants can end up in the products. No new atoms are created, and no atoms are destroyed.

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Which choices are real numbers?

Masja [62]

What ever one that doesn't repeat over and over or never ends

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3 years ago

A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 419 gram setting. It

Pachacha [2.7K]

Answer:

We reject the null hypothesis, and accept the alternative hypothesis.

So, it means that the machine is under filling the bags

Step-by-step explanation:

Given

Null Hypothesis

$H_0:\mu = 419$ --- works correctly at 419g

Alternate Hypothesis

$H_0:\mu < 419$ --- under fills the bag

$n =15$ --- the sample

$\bar x = 409$ --- the mean

$\sigma = 22$ --- the standard deviation

$\alpha = 0.05$ --- the significance level

Required

What is the decision rule

Since n is less than 30, we make use of t test

$t = \frac{\bar x - \mu}{\sigma/\sqrt n}$

$t = \frac{409 - 419}{22/\sqrt{15}}$

$t = \frac{-10}{22/ 3.87}$

$t = \frac{-10}{5.58}$

$t = -1.792$

Calculate df

$df = n-1$

$df = 15-1$

$df = 14$

Calculate the p value from the Student's t-distribution at df = 14 and $t = -1.792$

$p =0.047$

Given that: $\alpha = 0.05$

Since $p < \alpha$

So, it means that the machine is under filling the bags

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2 years ago

3=-1.5n pls help me (Solving Equations using Multiplication or Division)

motikmotik

Answer:

n = -2

Step-by-step explanation:

Step 1: Write equation

3 = -1.5n

Step 2: Divide both sides by -1.5

n = -2

Step 3: Check

Plug in x to verify it's a solution.

3 = -1.5(-2)

3 = 3

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Step-by-step explanation:

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If a math test has questions on spelling, the test does not have this type of validity.

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Answer:

yes

Step-by-step explanation:

because its true

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