5,395 Answered Questions for the topic probability

Probability Math

03/30/22

Probability of two boys and 2 girls?

In a family with 4 children, what is the probability of having 2 boys and then 2 girls, in that order? (Exclude multiple births and assume all outcomes are equally likely).In a family with 4... more
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Probability Statistics

03/29/22

Probability Statistics
The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 45 ounces and a standard deviation of 5 ounces.Use the Empirical... more
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Probability Statistics

03/29/22

Help with statistics question
The probability density of a random variable X is given in the figure below.From this density, the probability that X > 1.72 or X < 0.14 is: 
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Probability Statistics

03/29/22

A plane lands or takes off, on average once per 45 seconds at an airfield. Calculate what is the probability that in a random selected hour we notice:
1) At least 75 landings or take offs?2) Under 100 landings or take offs?
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Probability

03/29/22

Probability - Question
Hotel A and B offers 2 types of packages that include lodging only or lodging with breakfast. From a group of 300 tourists, 30 tourist choose Hotel A for lodging only and 120 tourists choose Hotel... more
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Probability

03/29/22

Probability - Question
The students in a college need to attend a course and pass three tests. The probability of passing the first test is 0.8 and if a student passes a test, the probability that the student will pass... more
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03/28/22

Yummy Creamy is a New York based company that manufactures and distributes ice-cream across tri-state area. The product line includes 2 main flavors – Purple Delight (PD) and Choco- Chips (CC).
Yummy Creamy Is a New York based company that manufactures and distributes Ice-cream across tri-state area. The product line includes 2 main flavors - Purple Delight (PD) and Choco- Chips (CC). On... more
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Probability Math Algebra 1 Algebra 2

03/26/22

PLEASE help with statistical probability questions!
In a class of 26 students, 14 have a cat and 7 have a dog. There are 5 students who have a cat and a dog. What is the probability that a student chosen randomly from the class does not have a dog?
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Probability Math Algebra 1 Algebra 2

03/25/22

PLEASE help with statistical probability questions!
In a math class with 19 students, a test was given the same day that an assignment was due. There were 11 students who passed the test and 14 students who completed the assignment. There were 3... more
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Probability Math Algebra 1 Algebra 2

03/25/22

PLEASE help with statistical probability questions!
In a math class with 19 students, a test was given the same day that an assignment was due. There were 11 students who passed the test and 14 students who completed the assignment. There were 3... more
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Probability Math Algebra 1 Algebra 2

03/25/22

please help me with statistical probability question!
Age 20-29 Age 30-39 Age 40-49 Age 50 & over Total High school only 946 1118 369 1010 3443 Some college 1088 1277 566 2106 5037 Bachelor's degree 646 1045 472 2083 4246 Master's... more
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Probability Math Algebra 1 Algebra 2

03/25/22

Please help with statistical probability questions
In a certain Algebra 2 class of 30 students, 16 of them play basketball and 8 of them play baseball. There are 12 students who play neither sport. What is the probability that a student chosen... more
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Probability Math Algebra 1 Algebra 2

03/24/22

help with statistical probability
In a class of 25 students, 17 have a cat and 7 have a dog. There are 5 students who have a cat and a dog. What is the probability that a student who has a cat also has a dog?
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Probability Math Algebra 1 Algebra 2

03/24/22

help with statistical probability

Age 20-29 Age 30-39 Age 40-49 Age 50 & over Total High school only 1413 661 799 602 3475 Some college 2237 562 1193 1185 5177 Bachelor's degree 1062 1391 1187 1732 5372 Master's... more
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Probability Math Algebra 1 Algebra 2

03/24/22

help with probability and statistics
There is a spinner with 10 equal areas, numbered 1 through 10. If the spinner is spun one time, what is the probability that the result is a multiple of 2 and a multiple of 5?
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Probability Math Algebra 1 Algebra 2

03/24/22

please help with these maht statistical probabilty questions
Plays an instrument Does not play an instrument Plays a sport 5 2 Does not play a sport 4 12 In a class of students, the following data table summarizes how many students play an instrument... more
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Probability Math Algebra 1 Algebra 2

03/24/22

please help with this math probability statistical question
Has a brother Does not have a brother Has a sister 2 3 Does not have a sister 10 7 In a class of students, the following data table summarizes how many students have a brother or a sister.... more
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Probability

03/24/22

A letter from the word below is chosen at random. Find the probability as a simplified fraction. PHOTOSYNTHESIS Probability of(N) =

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Probability Algebra

03/24/22

A jar contains 6 pennies, 14 nickels, 16 dimes, and 4 quarters. If one coin is chosen at random, find the probability as a percent. P(worth at least 5 cents) =

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Probability

03/24/22

What is the whole number of days such that one-quarter of batteries will last longer than this many days?

A carbon monoxide detector contains a battery that should have a mean lifetime of 365 days and a standard deviation of 12 days. The battery life has a normal distribution. What is the whole number... more
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Probability Math Statistics Maths

03/23/22

The average weight of 25 chocolate bars selected from a normally distributed population is 200 grams with a standard deviation of 10 grams.

   The average weight of 25 chocolate bars selected from a normally distributed population is 200 grams with a standard deviation of 10 grams. Find the point estimate and the confidence interval... more
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Probability Statistics

03/23/22

Find P61 find the value and sample mean
A population of values has a normal distribution with μ=245.2μ=245.2 and σ=48.8σ=48.8. You intend to draw a random sample of size n=84n=84. Please answer the following questions, and show your... more
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Probability Statistics

03/23/22

find probability

A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is unemployed is 30 weeks. Assume that the length of unemployment is normally distributed with... more
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Probability Statistics

03/23/22

A population of values has a normal distribution with μ=208.5μ=208.5 and σ=94.8σ=94.8. You intend to draw a random sample of size n=85n=85.
A population of values has a normal distribution with μ=208.5μ=208.5 and σ=94.8σ=94.8. You intend to draw a random sample of size n=85n=85. Please show your answers as numbers accurate to 4 decimal... more
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Probability Statistics

03/22/22

Help me please its urgent

A fast food chain store conducted a taste survey before marketing a new hamburger. The results of the survey showed that 75% of the people who tried this hamburger liked it. Encouraged by this... more
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