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katovenus [111]
3 years ago
5

Correct answer gets brainliest

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
7 0

Answer:

<em>B. 9 < 7 or x > 16.</em>

Step-by-step explanation:

<em>I had the same question and the answer was B.</em>

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URGENT!!!
ludmilkaskok [199]

Answer:

the combination of numbers must then be:

9.7 + 8.6 which results to 18.3

9.6 + 8.7 yields 18.3 as well.

LMK if I was wrong.

Yours Truly.

6 0
3 years ago
Calculate a critical z-score for a left-tailed, right-tailed, or two-tailed test.
muminat

Answer:

a. Z = -1.175.

b. Z = 1.34.

c. |Z| = 2.054.

d. |Z| = 1.28.

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

a. The critical z-score for a left-tailed test at a 12% significance level

Left-tailed test: The region of interest is the 12th percentile or below.

Thus, the critical z-score is Z with a p-value of 0.12, so Z = -1.175.

b. The critical z-score for a right-tailed test at a 9% significance level

Right-tailed test: The region of interest is the 100 - 9 = 91th percentile and above.

Thus, the critical z-score is Z with a p-value of 0.91, so Z = 1.34.

c. The critical z-score for a two-sided test at a 4% significance level is 1.75.

Two-tailed test: The region of interest is between the 4/2 = 2th percentile and the 100 - (4/2) = 98th percentile.

Thus, the critical z-score is |Z| with a p-value of 0.02 or 0.98, so |Z| = 2.054.

d. The critical z-score for a two-sided test at a 20% significance level is 0.85.

Region of interest is between the 20/2 = 10th percentile and the 100 - (20/2) = 90th percentile.

Thus, the critical z-score is |Z| with a p-value of 0.1 or 0.9, so |Z| = 1.28.

4 0
3 years ago
Please help!<br><br>3-5x+6(-x-2)
photoshop1234 [79]
The answer to your question is-9
7 0
3 years ago
I will give extra points please help
weqwewe [10]

Answer:

7

Step-by-step explanation:

<u>3 </u>+ 4 = 7.

So, therefor, x = 3

6 0
3 years ago
What is 23/144 + 13/144
11111nata11111 [884]

Answer:

Hope it helps :)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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