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IRISSAK [1]
3 years ago
6

Please help asap,the first person will get the brianlist plz,answer all of the 5 questions

Mathematics
2 answers:
almond37 [142]3 years ago
7 0

Step-by-step explanation:

1:d

2:c

3:a

4c

5:b

i think so

Katarina [22]3 years ago
7 0

Answer:

1 A.

2. D

3. B

4. C

5. A,B

Step-by-step explanation:

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3 years ago
A normal distribution has a standard deviation equal to 39. What is the mean of this normal distribution if the probability of s
Naily [24]

Answer:

The mean is \mu = 131

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

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