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SSSSS [86.1K]
3 years ago
10

43 +62 +57 + m / 4 = 55

Mathematics
1 answer:
ahrayia [7]3 years ago
7 0
The answer is .. m= -428
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Part C
nika2105 [10]

Answer:

rare llike 22%

Step-by-step explanation:

7 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
4x + 14 <br> HELP MEEEE PLSSSSSA
Dmitry [639]

Answer:

2(2x + 7)

by simplification

3 0
1 year ago
If <br>a+e = 11<br>a²-f=15<br>f+c=6<br>c×a-e=13<br>what is the value of the variables​
CaHeK987 [17]

Answer:

a=4

c=5

e=7

f=1

Step-by-step explanation:

the simplest method would be to start with a(2)"squared" (being '4' as this will get you closest to 15. So 16 -1 (being 'c') = 15. now plug those into the other equations and work the other numbers out.

8 0
3 years ago
Which is the variable in this equation ?<br><br><br><br> 3v - 2 = 10<br> answer is on the pic.
MAXImum [283]

Answer:

<em>The variable is v</em>

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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