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kondaur [170]
3 years ago
8

g Which of the following is not appropriate to use the t-confidence interval for . a. The sample is based on a simple random sam

ple (SRS). b. The sample size is greater than 30. c. The variable has a Normal distribution. d. The population standard deviation, , is known.
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
7 0

Answer:

d. The population standard deviation is known.

Step-by-step explanation:

T-distribution or Z-distribution, which to use?

If we have the population standard deviation is known, we use the z-distribution.

Otherwise, if we only have the standard deviation for the sample, we use the t-distribution.

Which of the following is not appropriate to use the t-confidence interval for

When the population standard deviation is known, so letter d.

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200 people were asked to name their favourite sport.
grin007 [14]

Answer:

5% but not sure

Step-by-step explanation:

80+5+10

4 0
3 years ago
6x – 3y = 5<br>y – 2x= 8​
noname [10]

Answer:

PA GEN SOLISYON --> "NO SOLUTION"

Step-by-step explanation:

Whether you multiply the top equation by ⅓ to make "-y" and "2x", or multiply the bottom equation by 3 to make "3y" and "-6x", you will see that 9⅓ ≠ 0, or 24 ≠ 0, therefore the result is "NO SOLUTION".

6 0
3 years ago
Simplify n^4 divided by n1/2
agasfer [191]

Given:

Consider the expression is

\dfrac{n^4}{n^{\frac{1}{2}}}

To find:

The simplified form of the given expression.

Solution:

We have,

\dfrac{n^4}{n^{\frac{1}{2}}}

Using the properties of exponents, we get

=n^{4-\frac{1}{2}}               \left[\because \dfrac{a^m}{a^n}=a^{m-n}\right]

=n^{\frac{8-1}{2}}

=n^{\frac{7}{2}}

Therefore, the simplified form of the given expression is n^{\frac{7}{2}}.

5 0
3 years ago
When 80% of a number is added to the number, the result is 252. what is the number
Rashid [163]
I Think The Answer Is 140.

The Expression: 0.8x + x = 252 Can Explain The Answer If x = 140.
Or: 1.8 Times x = 252 If x = 140.

3 0
3 years ago
 hey can someone help me with this immediately! i’ll be giving out brainiest if u don’t leave a link and don’t guess!
Minchanka [31]

Answer:

(3x3) /9

Step-by-step explanation:

first you triple the three (3x3) then divide by 9

8 0
3 years ago
Read 2 more answers
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