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Ghella [55]
3 years ago
13

Please help me with this sum​

Mathematics
2 answers:
leonid [27]3 years ago
8 0

USE CALCULATOR

Hope it helps

dusya [7]3 years ago
4 0

Answer:(1) 798

(2) 596

(3) 425

(4) 197

(5) 596

(6) 419

(7) 965

(8) 572

(9) 703

(10) 569

Step-by-step explanation:

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400 students were randomly sampled from a large university, and 289 said they did not get enough sleep. Conduct a hypothesis tes
melomori [17]

Answer:

The sample proportion represents a statistically significant difference from 50%

Step-by-step explanation:

Null hypothesis: The sample proportion is the same as 50%

Alternate hypothesis: The sample proportion is not the same as 50%

z = (p' - p) ÷ sqrt[p(1 - p) ÷ n]

p' is sample proportion = 289/400 = 0.7225

p is population proportion = 50% = 0.5

n is number of students sampled = 400

z = (0.7225 - 0.5) ÷ sqrt[0.5(1 - 0.5) ÷ 400] = 0.2225 ÷ 0.025 = 8.9

The test is a two-tailed test. Using a 0.01 significance level, critical value is 2.576. The region of no rejection of the null hypothesis is -2.576 and 2.576.

Conclusion:

Reject the null hypothesis because the test statistic 8.9 falls outside the region bounded by the critical values -2.576 and 2.576.

There is sufficient evidence to conclude that the sample proportion represents a statistically significant difference from 50%.

3 0
3 years ago
did i do this right “what % of 369 is 26” i got 7.04 so is that the rounded answer (hundredths place) or just 7.0=7?
Alenkasestr [34]

Answer:

26 is 7.05% or 7.04% of 369.

Step-by-step explanation:

Now 7.04% of 369 is actually 25.9776.

and 7.04% is 26.01452.

But if you round both 25.9776 and 26.01452 you get 26

So, technically you are correct.

Hope this helps! :)

8 0
3 years ago
checking account a charges a montly service fee of 3 and a per check fee of .02 while checking account b charges a montly servic
Gnoma [55]

Answer:

good morning I was just asking when will I be

3 0
3 years ago
What is the volume of the cone below?
Elden [556K]

Answer:

V = 3408 pi  unit^3

Step-by-step explanation:

Volume  of a cone is given by

V = 1/3 pi r^2 h

We know the radius is 12 and the height is 71

V = 1/3 * pi * (12)^2 *71

V = 1/3 * pi * 144 *71

V = 3408 pi  unit^3

7 0
3 years ago
Read 2 more answers
A machine prints 8 banners in 120 seconds how many seconds does it take to print one Banner
Novay_Z [31]
60 seconds because I have down this before and check it about a million time
4 0
4 years ago
Read 2 more answers
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