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2 years ago

6

Which math expression means "the quotient of an unknown number and 18"?

1 answer:

SVEN [57.7K]2 years ago

6 0

Answer:

$option \: b.$ $18•x$

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Answer:

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Will the sign of the product of two negative numbers be negative or positive? Explain your answer.

gogolik [260]

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Step-by-step explanation:

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Which equation can replace 3x + 5y = 59 in the original system and still produce the same solution?

mafiozo [28]

Answer:

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1 year ago

Say a friend had multiplied 1.2 and 2.6 and got 31.2. would that be the correct answer

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2 years ago

A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 436.0 gram setting. It

Vilka [71]

Answer:

We conclude that the machine is under filling the bags.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 436.0 gram

Sample mean, $\bar{x}$ = 429.0 grams

Sample size, n = 40

Alpha, α = 0.05

Population standard deviation, σ = 23.0 grams

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 436.0\text{ grams}\\H_A: \mu < 436.0\text{ grams}$

We use one-tailed(left) z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{429 - 436}{\frac{23}{\sqrt{40}} } = -1.92$

Now, $z_{critical} \text{ at 0.05 level of significance } = -1.64$

Since,

$z_{stat} < z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, we conclude that the machine is under filling the bags.

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2 years ago