3 years ago

What is the best approximation for the area of a circle with a diameter of 19 meters?

Mathematics

1 answer:

sammy [17]3 years ago

3 0

283.4 thats what my quiz said

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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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3 years ago

Please help , will give brainliest!

MissTica

Answer:

2.3283064

Step-by-step explanation:

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3 years ago

As the weight held by a spring increases, the length of the spring increases, proportionally. Suppose a 2-lb weight stretches a

meriva

The aswer would be B because you have to divide a couple numbers to get 20in.

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Answer:

F(2)?

Step-by-step explanation:

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