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rjkz [21]
3 years ago
14

Need help ASAP!!!!!!!!!!!!

Mathematics
1 answer:
Yakvenalex [24]3 years ago
4 0
I cant see 5th question....
Rest are attched below

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Answer the question for a normal random variable x with mean μ and standard deviation σ specified below. (Round your answer to o
vladimir2022 [97]

Answer:

x = 63.6

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 and also the area to its left. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X, which is the area to its right.

In this problem, we have that:

\mu = 38, \sigma = 11

Find a value of x that has area 0.01 to its right

This is x when Z has a pvalue of 1-0.01 = 0.99. So it is X when Z = 2.3267.

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

2.3267 = \frac{X - 38}{11}

X - 38 = 11*2.3267

X = 63.6

So x = 63.6

6 0
3 years ago
2. Katryn swims at a rate of 50 meters in 40 seconds. At this rate, how many meters
Sunny_sXe [5.5K]

Answer:

D.) 75 meters

Step-by-step explanation:

1 minute is 60 seconds

So, you divide 60 divided by 40=1.5

1.5 times 50=75

75 meters

D.)

Hope this helped!! :)

Brainliest?!?!

Stay safe and have a nice day/night/afternoon!!!

4 0
2 years ago
N f(x) = 2x , x=5. What is the value of the function?
wel
Plug the 5 into the x in the equation 2x. it should be 2(5) which equals 10.
6 0
3 years ago
A teacher has a bag of 100 unit cubes.She gives an equal number of cubes to each of the 7 groups in her class.She gives each gro
Arlecino [84]
100 divided by 7 is 14 r 2, so there are 2 left over
3 0
3 years ago
Read 2 more answers
A method for finding the volume of any solid for which cross sections by parallel planes have equal area is called
goldenfox [79]
The answer is D, Cavalieri's Principle 
3 0
3 years ago
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