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Statistics Math

10/13/22

Suppose that 𝑋 is normally distributed with mean 85 and standard deviation 19. A. What is the probability that 𝑋 is greater than 114.07?

Suppose that 𝑋X is normally distributed with mean 85 and standard deviation 19. What is the probability that 𝑋X is greater than 114.07?

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Statistics

10/12/22

If p(e)= 0.55, p(e or f) =0.85 and p(e and f) =0.05 find p(f)

Statistics

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Statistics Math

10/12/22

Greater than question and between question for The Sampling Distribution for Proportions

Thank you to whoever helps explain this to me, I tried looking at a few videos and examples from other sites but I can only go as far as P(Z> -7.8921)= 1-(-7.8921)=8.8921 I put in my answer in... more

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Statistics

10/11/22

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 7.2 liters.

A.) What is the probability that a daily production is less than 29.7 liters ?B.) What is the probability that a daily production is more than 51.8 liters ?( Round 4 decimal )

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Statistics Finite Math

10/11/22

Could you help me with this? The question is too long to fit here.

The officers of a high school senior class are planning to rent buses and vans for a class trip. Each bus can transport 49 students, requires 2 chaperones, and costs $1,400 to rent. Each van can... more

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Statistics Probability Finite Math

10/11/22

Mixed in a drawer are 2 blue socks, 4 white socks, and 6 gray socks. You pull out two socks, one at a time, without looking. Find the probability of getting 2 socks of the same color.

Thank you for helping!

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Statistics Probability

10/11/22

Please help me to find the probability of this question

Suppose that about 85% of graduating students attend their graduation. A group of 21 graduating students is randomly chosen.Find the probability that 15 or 16 attend.

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Statistics Probability

10/11/22

Please help me find the probability of this questions

It has been estimated that only about 30% of California residents have adequate earthquake supplies. Suppose you randomly survey 11 California residents. We are interested in the number who have... more

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Statistics

10/11/22

Normal Distribution: Finding probability using tables

For a standard normal distribution, find:P(z < 0.11)Round to 4 decimal places

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Statistics

10/11/22

A statement that “the 95% confidence interval for the population mean is (275, 325)" means that 95% of the population values are between 275 and 325. Is this true/false? & Why?

I think the statement is false but I am not sure so I can't come up with a reason/rationale. Thank you

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Statistics Math

10/11/22

Need Help ASAPP!!

A distribution of points scored per basketball game for college athletes has a σ=4. Find the z-score for a score that is:a) 4 points above the mean z = b) 12 points above the mean z = c) 2... more

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Statistics

10/11/22

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 7.2 liters.

A.) What is the probability that daily production is less than 29.7 liters ?B.) What is the probability that daily production is more than 51.8 liters ?

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Answers •1

Statistics

10/11/22

approximately normally distributed with a mean of 53.6 inches, and standard deviation of 2.2 inches.

In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally distributed with a mean of 53.6 inches, and standard deviation of 2.2... more

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Statistics

10/10/22

Find the value separating the bottom 40% values from the top 60% values. Find the sample mean separating the bottom 40% sample means from the top 60% sample means.

A population of values has a normal distribution with μ=113μ=113 and σ=89.3σ=89.3. You intend to draw a random sample of size n=198n=198. Please answer the following questions, and show your... more

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Statistics

10/10/22

Need help on stastics homework

A Field Poll Survey reported that 64% of registered voters in a state approved of allowing two people of the same gender to marry and have regular marriage laws apply to them. Among 18 to 39 year... more

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Statistics Probability

10/10/22

In a club with 8 junior members and 14 senior members, a 5-member committee will be randomly chosen. Find the probability that the committee contains at least 4 senior members.

Also, what's the probability that the committee will include 4 senior members?

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Statistics

10/10/22

If a seed is planted, it has a 75% chance of growing into a healthy plant. If 6 seeds are planted, what is the probability that exactly 1 doesn't grow?

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Statistics Probability

10/09/22

The table summarizes results from 981 pedestrian deaths that were caused by automobile accidents

The table summarizes results from 981 pedestrian deaths that were caused by automobile accidents. Driver Intoxicated Pedestrian Intoxicated? Yes Yes 51 80 No 257 593 If one of the... more

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Statistics

10/09/22

Math Statistics

65% of all violent felons in the prison system are repeat offenders. If 33 violent felons are randomly selected, find the probability that

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Statistics

10/09/22

math statistics

The student council is hosting a drawing to raise money for scholarships. They are selling tickets for $10 each and will sell 700 tickets. There is one $3,000 grand prize, three $500 second prizes,... more

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Statistics

10/09/22

Computing z score in a normal distribution

Q1: What is the z-score at 1 standard deviation away from the mean? Assume that the distribution is normal.

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Statistics

10/08/22

Company XYZ know that replacement times for the quartz time pieces it produces are normally distributed with a mean of 17.7 years and a standard deviation of 1.8 years.

the probability that a randomly selected quartz time piece will have a replacement time less than 14.1 years? P(X < 14.1 years) if the company wants to provide a warranty so that only 1% of the... more

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Statistics

10/08/22

What proportion of pregnancies last fewer than 262 days? P(X < 262 days)

The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days and a standard deviation of 16 days. A distribution of values is normal with a mean of 260 and a... more

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Statistics

10/08/22

For a standard normal distribution, P(-2.11 < z < 2.72)

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Statistics

10/08/22

Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man 67.7 inches tall

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Suppose that 𝑋 is normally distributed with mean 85 and standard deviation 19. A. What is the probability that 𝑋 is greater than 114.07?

If p(e)= 0.55, p(e or f) =0.85 and p(e and f) =0.05 find p(f)

Greater than question and between question for The Sampling Distribution for Proportions

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 7.2 liters.

Could you help me with this? The question is too long to fit here.

Mixed in a drawer are 2 blue​ socks, 4 white​ socks, and 6 gray socks. You pull out two​ socks, one at a​ time, without looking. Find the probability of getting 2 socks of the same color.

Please help me to find the probability of this question

Please help me find the probability of this questions

Normal Distribution: Finding probability using tables

A statement that “the 95% confidence interval for the population mean is (275, 325)" means that 95% of the population values are between 275 and 325. Is this true/false? & Why?

Need Help ASAPP!!

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 7.2 liters.

approximately normally distributed with a mean of 53.6 inches, and standard deviation of 2.2 inches.

Find the value separating the bottom 40% values from the top 60% values. Find the sample mean separating the bottom 40% sample means from the top 60% sample means.

Need help on stastics homework

In a club with 8 junior members and 14 senior​ members, a ​5-member committee will be randomly chosen. Find the probability that the committee contains at least 4 senior members.

If a seed is planted, it has a 75% chance of growing into a healthy plant. If 6 seeds are planted, what is the probability that exactly 1 doesn't grow?

The table summarizes results from 981 pedestrian deaths that were caused by automobile accidents

Math Statistics

math statistics

Computing z score in a normal distribution

Company XYZ know that replacement times for the quartz time pieces it produces are normally distributed with a mean of 17.7 years and a standard deviation of 1.8 years.

What proportion of pregnancies last fewer than 262 days? P(X < 262 days)

For a standard normal distribution, P(-2.11 < z < 2.72)

Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man 67.7 inches tall

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Mixed in a drawer are 2 blue socks, 4 white socks, and 6 gray socks. You pull out two socks, one at a time, without looking. Find the probability of getting 2 socks of the same color.

In a club with 8 junior members and 14 senior members, a 5-member committee will be randomly chosen. Find the probability that the committee contains at least 4 senior members.