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2 years ago

Not sure how to do this

Mathematics

1 answer:

Sergio039 [100]2 years ago

5 0

45 i believe it is i may be wrong!!!

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A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 450 gram setting. It

Arturiano [62]

Answer:

Test statistic = -2.25

P-value = 0.0199

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 450 gram

Sample mean, $\bar{x}$ = 441 grams

Sample size, n = 16

Alpha, α = 0.05

Sample variance = 256

$\sigma^2 = 256\\\sigma = \sqrt{256} = 16$

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 450\text{ grams}\\H_A: \mu < 450\text{ grams}$

We use one-tailed t test to perform this hypothesis.

Formula:

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

Putting all the values, we have

$t_{stat} = \displaystyle\frac{441 - 450}{\frac{16}{\sqrt{16}} } = -2.25$

Now,

Degree of freedom =

$=n-1 = 16-1=15$

We can calculate the p-value from the table as:

P-value = 0.0199

Conclusion:

Since the p-value is smaller than the significance level we fail to accept the null hypothesis and reject it.

Thus, there is enough evidence to support the claim that the machine is under filling the bags .

5 0

2 years ago

Match each value with the smallest number set that it belongs to.

bulgar [2K]

(-2)^3
12^0
I don't know the rest

4 0

3 years ago

At the beginning of the season, a sports writer predicts the teams that will finish in the top three places in the eastern, cent

serious [3.7K]

Answer: B. Ordinal

Step-by-step explanation:

Given statement : A sports writer predicts the teams that will finish in the top three places in the eastern, central, and western divisions. It means he will predicts the teams that will finish in an order ( from first to third ) . It means the sports writer likely to use ordinal scale.

Hence, B is the right answer.

An ordinal scale is a level of measurement scale which is used to arrange a data into an order.

4 0

3 years ago

Which matrix is equal to C-B?

kherson [118]

7. -20
10 3
6 3

Subtract each remember 4-- -6= 10

6 0

2 years ago

What are the divisible number(s) for 430?

ollegr [7]

Answer:

The numbers that 430 is divisible by are 1, 2, 5, 10, 43, 86, 215, and 430.

7 0

2 years ago

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