Giving brainliest!!!!!!!!!!!!! Please be correct

Mathematics

2 answers:

m_a_m_a [10]3 years ago

8 0

Answer:

B. Number of years

Hope this helps

Let me know if I am right

Explanation:

He asks students to record how long they have played an instrument.

Marysya12 [62]3 years ago

5 0

Answer:

i cant see the picture

Step-by-step explanation:

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There are three marbles in a bag. One is red and two are black. What is the probability of picking a black marble first, putting

Maru [420]

Answer:

well for me I think

Step-by-step explanation:

2/3×2/3

4/9

since they are replacing the black marbles back

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The slope is 3/4 and they y-intercept is (0, 4

Paha777 [63]

Answer:

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Step-by-step explanation:

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Suppose that the sitting back-to-knee length for a group of adults has a normal distribution with a mean of mu equals 24.4 in.

solong [7]

Answer:

$P(X \geq 26.6) = 0.0336$ , which is greater than 0.01. So a back-to-knee length of 26.6 in. is not significantly high.

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:

$\mu = 24.4, \sigma = 1.2$