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Statistics Probability

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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Statistics Probability

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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Statistics Probability

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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Statistics Probability

03/22/22

In a Pet Club, 23 members have a dog, 37 members have a cat, 5 members have a hamster, and 10 members have a bird. What percentage of Pet Club members have a cat or a hamster?

In a Pet Club, 23 members have a dog, 37 members have a cat, 5 members have a hamster, and 10 members have a bird. What percentage of Pet Club members have a cat or a hamster? (Assume that each... more

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Statistics

03/22/22

Proportion of standard deviation

suppose the distribution of a variable is normally distributed. what proportion of the data will be within 0.75 standard deviations of the mean?

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Statistics

03/22/22

Minimum score required

Suppose ACT Science scores are normally distributed with a mean of 21.2 and a standard deviation of 4.7. A university plans to admit students whose scores are in thetop 35 %. What is the minimum... more

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Statistics

03/22/22

if you draw a card value of 4 or less from a standard deck of cards, i will pay you $18. if not you pay me $9. find the expected value proposition

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Statistics

03/21/22

Statistics: The CLT

A large tank of fish from a hatchery is being delivered to a lake. The hatchery claims that the mean length of fish in the tank is 15 inches, and the standard deviation is 6 inches. A random sample... more

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Statistics

03/21/22

Statistics: The CLT

Suppose x has a distribution with 𝜇 = 78 and 𝜎 = 8.Find P(74 ≤ x ≤ 79). (Round your answer to four decimal places.)

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Statistics

03/21/22

When 360 college students were surveyed160, said they own their car. Find a point estimate for p, the population proportion of students who own their cars.

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Statistics Probability

03/21/22

Statistic and Probability

Suppose that pulse rates among healthy adults are normally distributed with a mean of 79 beats/minute and a standard deviation of 8 beats/minute. What proportion of healthy adults have pulse rates... more

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Statistics

03/21/22

Confidence Intervals

A health insurance company wants to know the proportion of admitted hospital patients who have a type 2 diabetes at Orlando Health hospitals. How large of a sample should be taken to estimate the... more

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Statistics

03/21/22

This is a Statistics problem based on confidence

An Orlando radio station is interested in knowing the percentage of their listeners who attend their Summer Concert Series. How many listeners would the radio station need to sample to determine... more

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Statistics

03/20/22

According to Masterfoods

According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. You randomly... more

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Statistics

03/20/22

Use a tree diagram

Question 3 Two factories manufacture computer memory chips. Suppose that 20% of the chips from Factory I are defective and that 5% of the chips from Factory II are defective. Each week Factory I... more

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Statistics Math Algebra 1 Algebra 2

03/20/22

please help with this petsmart statistical probability question!!

Customers entering Petsmart were surveyed at random about what type of pet they had. The results showed that the probabitlity of a person owning a dog was .56. The probabilty that a person had both... more

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Statistics Math Algebra 1 Algebra 2

03/20/22

Please help me with these statistical probability questions i beg !!

The international club at school has 105 members, many of whom speak multiple languages. The most common spoken languages in the club are English, Spanish, and Chinese. Use the Venn Diagram below... more

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Statistics

03/20/22

Hypothesis Testing - How to identify the claim?

To see whether people are keeping their car tires inflated to the correct level (35 psi), a tire company employee selects a sample of 36 tires (randomly) and checks their pressure. The mean of the... more

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Statistics

03/20/22

The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 31 liters, and standard deviation of 7.6 liters.

A) What is the probability that daily production is less than 39.8 liters?Answer= (Round your answer to 4 decimal places.)B) What is the probability that daily production is more than 38.3... more

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Statistics

03/19/22

A manufacturing machine has a 3% defect rate. If 5 items are chosen at random, what is the probability that at least one will have a defect?

Round your answer to 4 decimal places

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Statistics Math Algebra 2 Geometry

03/19/22

I need help with these probability questions for geometry

Customers entering Petsmart were surveyed at random about what type of pet they had. The results showed that the probabitlity of a person owning a dog was .56. The probabilty that a person had both... more

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Statistics

03/18/22

I keep getting this wrong

From a group of 9 people, you randomly select 5 of them.What is the probability that they are the 5 oldest people in the group?Give your answer as a fraction

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Statistics

03/18/22

I keep getting this wrong . Please tell me why

A bag contains 6 red marbles, 6 white marbles, and 10 blue marbles. You draw 3 marbles out at random, without replacement. Give all answers as a decimal rounded to four places.a) What is the... more

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Statistics

03/18/22

Statistics questions

Analyzing many years of data, a car insurance company finds that its customers' claims have a mean of $250 and a standard deviation of $1000, and the distribution is skewed to the right. In a year... more

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Statistics Geometry Probability

03/18/22

SOMEBODY PLEASE HELP ME WITH THE TWO WAY TABLES FOR GEOMETRY!! I NEED HELP VERY SOON PLEASE

Studied less than two hours(L) Studied more than two hours(M) total Studied independantly (G) 12 4 16 Studied with a group(G) 8 11 19 total 20 15 35 a) What is the probability that a... more

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find probability

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.

Help me please its urgent

In a Pet Club, 23 members have a dog, 37 members have a cat, 5 members have a hamster, and 10 members have a bird. What percentage of Pet Club members have a cat or a hamster?

Proportion of standard deviation

Minimum score required

if you draw a card value of 4 or less from a standard deck of cards, i will pay you $18. if not you pay me $9. find the expected value proposition

Statistics: The CLT

Statistics: The CLT

When 360 college students were​ surveyed160, said they own their car. Find a point estimate for​ p, the population proportion of students who own their cars.

Statistic and Probability

Confidence Intervals

This is a Statistics problem based on confidence

According to Masterfoods

Use a tree diagram

please help with this petsmart statistical probability question!!

Please help me with these statistical probability questions i beg !!

Hypothesis Testing - How to identify the claim?

The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 31 liters, and standard deviation of 7.6 liters.

A manufacturing machine has a 3% defect rate. If 5 items are chosen at random, what is the probability that at least one will have a defect?

I need help with these probability questions for geometry

I keep getting this wrong

I keep getting this wrong . Please tell me why

Statistics questions

SOMEBODY PLEASE HELP ME WITH THE TWO WAY TABLES FOR GEOMETRY!! I NEED HELP VERY SOON PLEASE

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When 360 college students were surveyed160, said they own their car. Find a point estimate for p, the population proportion of students who own their cars.