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Mathematics

2 answers:

Greeley [361]3 years ago

5 0

The image is blank lol

frez [133]3 years ago

3 0

Answer:

it's black

Step-by-step explanation:

I can't see the question.

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If it takes 5 minutes for 5 machines to make 5 objects, then how long would it take for 100 machines to make 100 objects?

miss Akunina [59]

1 machine 5 min. 1 object
100 machine x min. 100 object

so than from this result that for 100 machine to make 100 objects need 5 minutes

hope this will help you

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3 years ago

A store sells 3 ears of corn for $1 they round prices to the nearest cent.Tell whether you would describe the relationship betwe

ziro4ka [17]

<span>A store sells 3 ears of corn for $1. They round prices to the nearest cent as shown below. Tell whether you would describe the relationship between cost and number of ears of corn as proportional relationship. Justify your answer. Ears of corn 1 2 3 4 Amt charged($) 0.33 0.67 1.</span>

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3 years ago

Intellectual development (Perry) scores were determined for 21 students in a first-year, project-based design course. (Recall th

Anit [1.1K]

Answer:

The 99% confidence interval is (3.0493, 3.4907).

We are 99% sure that the true mean of the students Perry score is in the above interval.

Step-by-step explanation:

Our sample size is 21.

The first step to solve this problem is finding our degrees of freedom, that is, the sample size subtracted by 1. So

$df = 21-1 = 20$ .

Then, we need to subtract one by the confidence level $\alpha$ and divide by 2. So:

$\frac{1-0.99}{2} = \frac{0.01}{2} = 0.005$

Now, we need our answers from both steps above to find a value T in the t-distribution table. So, with 20 and 0.005 in the two-sided t-distribution table, we have $T = 2.528$