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3 years ago

write the condition to be satisfied by q so that a rational number p/q has a terminating decimal expansion

1 answer:

hjlf3 years ago

6 0

For a rational number to have a terminating decimal expansion
q should be in the form 5^m and 2^n or both. If q is not in the form of either then it is a non terminating recurring decimal expansion

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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 $T = 2.528$

Now, we find the standard deviation of the sample. This is the division of the standard deviation by the square root of the sample size. So

$s = \frac{0.40}{\sqrt{21}} = 0.0873$

Now, we multiply T and s

$M = 2.528*0.0873 = 0.2207$

Then

The lower end of the interval is the mean subtracted by M. So:

$L = 3.27 - 0.2207 = 3.0493$

The upper end of the interval is the mean added to M. So:

$LCL = 3.27 + 0.2207 = 3.4907$

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

Interpretation:

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

7 0

3 years ago

The quality-control manager of a large factory is concerned about the number of defective items produced by workers. Thirty work

kotegsom [21]

Answer:

a. There is no blocking variable, and incentive plans will be randomly assigned to the workers.

Step-by-step explanation:

The Randomized Complete Block Design (RCBD) is a standard experimental design where experimental units or subjects are grouped as blocks (also known as replicates). In RCBD, subjects within each block are randomly assigned to the experimental units within a block. RCBD is a type of design that reduces variability by controlling variation within each treatment, thereby enhancing the estimation of the treatment effects (combinations of the factor levels of the different factors).

6 0

3 years ago

Dan scored 87 on his math test. The

Dmitry_Shevchenko [17]

Answer:69.15

Step-by-step explanation: the deviation is 6 which and 1/6 of people got the same grade as him - 100 = 69.15

5 0

3 years ago

Pls help!!! if f(x) = 3x-2 and g(x) = 6-4x, fibd f(x) + g(x)

sp2606 [1]

So first off the equation we are solving is f(x) + g(x). So i want to plug in those equations first off. The new equation I get should be 3x-2 + 6 -4x. I then simplify this to -x+4 or 4-x.

6 0

3 years ago

Read 2 more answers

Not sure if this is right.

finlep [7]

Answer:

I think your right :)

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

write the condition to be satisfied by q so that a rational number p/q has a terminating decimal expansion​

write the condition to be satisfied by q so that a rational number p/q has a terminating decimal expansion