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IRINA_888 [86]
3 years ago
8

Help!!

Mathematics
2 answers:
Ivanshal [37]3 years ago
8 0

I guess

48 - 18

30

i \: hope \: it \: helps \: mate

enjoy \: your \: \: day

#Captainpower:)

DochEvi [55]3 years ago
8 0
B=33 That’s the answer
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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.

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2 years ago
A licensed nurse practitioner is instructed to give a patient 2100 milligrams of an antibiotic over a period of 36 hours. If the
forsale [732]

Answer:

233.33 mg

Step-by-step explanation:

9x = 2100

---> x = 2100/9

---> x = 233.33 mg

6 0
2 years ago
Fernando has a mixed stack of sports
Yakvenalex [24]
Answer: d
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3 years ago
am i the only one that's confused? i don't get this and neither does my older sister! please tell me if u get it! :0
katovenus [111]

Answer:

I believe the answer is C. I'd have to work this out on paper to be certain, but from what i worked out mentally, i got C. lol

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
I need help ASAP please!!
vagabundo [1.1K]

Answer:

x = 13 , y = 29

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask!

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3 years ago
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