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Nat2105 [25]
3 years ago
6

If 18% of the beads in a bag are green, 25% are red, and 40% are purple, what is the probability of choosing a green bead and th

en a purple bead, if you replace the bead in between?
a. 22%

b. 58%

c. 7.2%

d. 4.5%
Mathematics
2 answers:
Elina [12.6K]3 years ago
3 0

the answer is a)22 %

iren2701 [21]3 years ago
3 0

Answer: c. 0.072

Step-by-step explanation:

Given : The probability of getting a green bead = 18% = 0.18

The probability of getting a purple bead = 40% =0.40

If replacement occurs, then the probability of choosing a green bead and then a purple bead will be :-

0.18\times0.40=0.072

Hence, the probability of choosing a green bead and then a purple bead = 0.072

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Use the IQR to determine if any of the data in the data set are outliers.
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Answer:

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Step-by-step explanation:

5 0
3 years ago
An auto weighing 2,500 pounds is on a street inclined at 10 with the horizontal. Find the force necessary to prevent the car fro
Misha Larkins [42]

Answer:

1931.7N

Step-by-step explanation:

We are told in the question that :

An auto ( a car) weighs = 2500 pounds

It s inclined at n horizontal Ange of 10°

We are asked to find the force that would prevents it from rolling down the street.

Since the unit for Force = Newton or kgm/s²

Step 1

Convert Weight in pounds to kg

1 pound = 0.453592kg

2500 pounds =

2500 pounds × 0.453592kg

= 1133.981kg

Step 2

Find the force that would prevents it from rolling down the street.

Force = Mass × Acceleration due to gravity × sin θ

Acceleration due to gravity = 9.81m/s

Force = 1133.981kg × 9.81 × sin 10°

Force = 1931.7237321 N

Approximately = 1931.7N

4 0
3 years ago
A statistician chooses 27 randomly selected dates, and when examining the occupancy records of a particular motel for those date
Anni [7]

Answer:

Confidence interval variance [21.297 ; 64.493]

Confidence interval standard deviation;

4.615, 8.031

Step-by-step explanation:

Given :

Variance, s² = 34.34

Standard deviation, s = 5.86

Sample size, n = 27

Degree of freedom, df = 27 - 1 = 26

Using the relation for the confidence interval :

[s²(n - 1) / X²α/2, n-1] ; [s²(n - 1) / X²1-α/2, n-1]

From the chi distribition table :

X²α/2, n-1 = 41.923 ; X²1-α/2, n-1 = 13.844

Hence,

[34.34*26 / 41.923] ; [34.34*26 / 13.844]

[21.297 ; 64.493]

The 95% confidence interval for the population variance is :

21.297 < σ² < 64.493

Standard deviation is the square root of variance, hence,

The 95% confidence interval for the population standard deviation is :

4.615 < σ < 8.031

3 0
3 years ago
The length of human pregnancies from conception to birth varies according to a distribution that is approximately normal with a
Oduvanchick [21]
218, 314 are the two values do the middle 95% of the lengths of all pregnancies fall.
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What is the x-intercept of -2x 5y = 20 ? question 1 options: 10 4 -4 -10?
Ahat [919]
You mean -2x+5y=20 if it was that's how you do it
so if you're finding the x intercept the y will turn to 0 why because you're only looking for x their's no need for y
so it will be -2x+0=20
-2x=20 if it's multiplication then you change it to division
-2x/-2=20/-2
x=-10 








7 0
3 years ago
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