HI i'm giving brainiest for the best answer!

Mathematics

2 answers:

Anika [276]2 years ago

7 0

Answer:

p(1/4)40

Step-by-step explanation:

hope this helps^^

blsea [12.9K]2 years ago

6 0

The answer is
p (1/4) 40

You might be interested in

Find the value of x please!!!

pav-90 [236]

Answer:

your answer is 20 because you subtract 110 by 90 because that is a right angles and all right angles are 90 degrees.

Step-by-step explanation:

4 0

2 years ago

Evaluate each expression when a= - 4 and b= 3 ab

Andrews [41]

Answer:

-12

Step-by-step explanation:

<u>Step 1: Substitute</u>

ab -> -4 for a and 3 for b

(-4) * (3)

Answer: -12

6 0

3 years ago

The amount of time all students in a very large undergraduate statistics course take to complete an examination is distributed c

Anestetic [448]

Answer:

a) The mean is $\mu = 60$

b) The standard deviation is $\sigma = 9$

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be 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.

The probability a student selected at random takes at least 55.50 minutes to complete the examination equals 0.6915.

This means that when X = 55.5, Z has a pvalue of 1 - 0.6915 = 0.3085. This means that when $X = 55.5, Z = -0.5$