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Naddik [55]
3 years ago
14

ᴄᴀɴ ꜱᴏᴍᴇᴏɴᴇ ʜᴇʟᴘ ᴍᴇ ᴀꜱᴀᴘ ᴘʟꜱ?

Mathematics
2 answers:
ruslelena [56]3 years ago
6 0

Answer:

Your answer is C

(please mark as brainliest <3 )

Step-by-step explanation:

Nastasia [14]3 years ago
3 0
Definitely c but not sure yet lol
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A study investigated the effectiveness of meditation training in reducing trait anxiety. The study evaluated subjects trait anxi
Setler79 [48]

Answer:

The 99% confidence interval for the population mean reduction in anxiety was (1.2, 8.6).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 27 - 1 = 26

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 26 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.99}{2} = 0.995. So we have T = 2.7787.

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.7787\frac{6.9}{\sqrt{27}} = 3.7

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 4.9 - 3.7 = 1.2.

The upper end of the interval is the sample mean added to M. So it is 4.9 + 3.7 = 8.6.

The 99% confidence interval for the population mean reduction in anxiety was (1.2, 8.6).

6 0
2 years ago
I'm thinking of two numbers, 12 and another number. 12 and my other number have a GCF of 6 and a LCM of 36. What's the other num
mihalych1998 [28]

Answer:

As GCF is

6

and LCM is

36

, and one number is

12

other number is

6

×

36

12

=

6

×

3

36

1

12

=

18

Step-by-step explanation:

5 0
3 years ago
Which answer correctly estimates the product of 20.21 × 999.801? A. about 20,000 B. about 2,000 C. about 200 D. about 20
levacccp [35]

20.21 multiplied by 999.801 is 20,205.97821, so the correct answer would be A. about 20,000

8 0
3 years ago
Please Please Please Help Me On These 2 Math Questions!!!!! I GIVE THANKS!!!!
Mars2501 [29]
A. After the mod. One wall is “x” longer than original (horizontal in diagram) and the other is “x” shorter (vertical)
(30+x)(30-x)

b. He original area = 30 x 30 = 900 sq. ft.
The mod. Area is (30+6)(30-6) = 36x24= 764 sq. ft.

So the room was largest to begin with when it was a square
3 0
3 years ago
Which expression can be used to find m pls help
natali 33 [55]

Answer:

∠ U = 22.62°

Step-by-step explanation:

We can use the trigonometric expression to find ∠U by using the ratio:

sin(θ) = opposite/ hypotenuse

=> sin ∠U = 7.5/ 19.5

=> ∠ U = sin^{-1}( 7.5/ 19.5)

∴ ∠ U = 22.619° ≈ 22.62°

5 0
2 years ago
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