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Inessa [10]
3 years ago
6

What is the standard deviation of the data set 2,4,7,8,9

Mathematics
1 answer:
Temka [501]3 years ago
3 0
9999999 lol ok frfr add them all up then get ur answer
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The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift.
garik1379 [7]

Answer:

The probability that X is less than 32 minutes is 0.736.

Step-by-step explanation:

Given : The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift. If X has an average value of 24 minutes.

To find : What is the probability that X is less than 32 minutes?

Solution :

If X has an average value of 24 minutes.

i.e. \lambda=24

The random variable X is exponentially distributed, where X represents the time it takes for a person to choose a birthday gift.

The exponentially function is \frac{1}{\lambda}e^{-\frac{x}{\lambda}}

The function form according to question is

f(x)=\{\frac{1}{24}e^{-\frac{x}{24}}, x>0\}

The probability that X is less than 32 minutes is

P[x

P[x

P[x

Therefore, the probability that X is less than 32 minutes is 0.736.

7 0
3 years ago
3 jars of green olives and 4 jars of black olives from her pantry to her kitchen. Each jar weighs one fifth pound what is the to
nikdorinn [45]

Answer:

7/5 pound

Step-by-step explanation:

if each jar weigths 1/5 pound and you have 7 jars in total, you need to multiply: 1/5*7 = 1/5 * 7/1 = 7/5

4 0
3 years ago
Elise is buying a new car selling for $21,450. The rate of depreciation on this type of car is 8% per year. What is the value of
DochEvi [55]

Answer:

Step-by-step explanation:

8 times 5 is 40 which means you should do 21,450 divided by 40 which is $536.25 so do 21,450 take away 536.25 which is 20913.75

Pls mark brainliest

7 0
3 years ago
Read 2 more answers
Following triangles are similar
oksian1 [2.3K]

Answer:

40m

Step-by-step explanation:

0.2/1=8/x

cross multiply

8*1=0.2x

8=0.2x

8/0.2=x

x=40

3 0
3 years ago
Please see picture to solve the volume of this figure.
Gemiola [76]

For this case we have that by definition, the volume of a rectangular prism is given by:

V = a * b * c

Where:

a: Long

b: Width

c: High

Prism 1:

V_ {1} = 7 * 6 * 1 = 42 \ cm ^ 3

Prism 2:

V_ {2} = 7 * 3 * 4 = 84 \ cm ^ 2

Thus, the total volume is:

V = 42 + 84 = 126 \ cm ^ 3

Answer:

126 \ cm ^ 3

8 0
3 years ago
Read 2 more answers
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