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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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If P(n) and Q(n) are polynomials of degree j and k, respectively, then the series
Naya [18.7K]

Answer:

converges

Step-by-step explanation:

well the two polynomials in the series are 1 and n^8 (I'm assuming the +7 is not in the decimal but it seems to not matter). The degree of the polynomial 1 is 0 which can be represented by 1x^0. The second polynomial in the denominator has a degree of 8. So j = 0  and k = 8. Since 0 < (8-1)

0 < 7 the series converges

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Approximate the real zeros of f(x) = x2 + 3x + 1 to the nearest tenth

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3 years ago
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The altitude drawn to the hypotenuse of a right triangle divides the hypotenuse into segments of lengths 4 and 12. Find the leng
Ostrovityanka [42]

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3 years ago
A school survey of 90 sixth graders showed that 25% of them play basketball and about 17% play soccer. What are the chances that
bogdanovich [222]

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0.0425

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What relationship do the ratios of sin x° and cos y° share?
puteri [66]

Answer:

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Step-by-step explanation:

sin x° is equivalent to O/H, or the opposite/hypotenuse sides of the triangle. Therefore:

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