8,918 Answered Questions for the topic statistics

Statistics

06/08/22

Statistic Probability
A roaming band of adventurers purchases potions from three guilds: 55% from guild đș1G1, 30% from guild đș2G2, and 15% from đș3G3. Suppose 12% of the potions from guild đș1G1 are cursed, 25% of potions... more
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Statistics

06/08/22

Deck of Cards Probability
You pick 3 cards from a regular deck of 52 cards. Answer the following: What is the probability that all three are Kings? What is the probability they have all have different values (e.g. a 6, 8,... more
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Statistics

06/08/22

A candy manufacturer produces Halloween surprise bags by filling bags with 5 different surprises. How many different surprise bags can the company create if it stocks 14 different types of surprises?

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Statistics

06/08/22

a mean of 57 and a standard deviation of 3. Using the 68-95-99.7 rule, what is the approximate percentage of lightbulb replacement requests numbering between 57 and 66?
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Statistics

06/07/22

A newspaper conducted a statewide survey concerning a proposal to raise taxes in order to prevent budget cuts to education
A newspaper conducted a statewide survey concerning a proposal to raise taxes in order to prevent budget cuts to education. The newspaper took a random sample (assume it is an SRS) of 500... more
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Statistics

06/06/22

(STATISTICS) Test whether the variance of the task times of tasks 1 and 2 are different at a 0.05 significance level.
a)Test whether the variance of the task times of tasks 1 and 2 are different at a 0.05 significance level.b)) Test whether the task times of these three tasks are different at a 0.05 significance... more
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06/06/22

Which of the following situation is not a bivariate data?

Which of the following is not a bivariate data?A. Study a group of college students to find out their height and their weightB. Study a group of diabetic patients to find their weightsC. Study a... more
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Statistics Probability

06/06/22

Distribution probability
In a large city 1 person in 8 is left handed. Find the probability that in a random sample of 30 peoplea) exactly 6 will be left handed: Answerb) more than 6 will be left handed: AnswerEnter... more
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06/06/22

Which of the following is not a bivariate data??
Which of the following is not a bivariate data?A. Study a group of college students to find out their height and their weightB. Study a group of diabetic patients to find their weightsC. Study a... more
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Statistics Mathematics

06/05/22

A class of students gathered data concerning which canteen foods were most often thrown in garbage. As a result of these efforts, certain items were removed from the regular menu.
1. What do you think did the students do to gather the needed data?2. How did they know which foods were most often thrown in the garbage?3. If you were to do the same, how will you do it?
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Statistics

06/05/22

A class of students gathered data concerning which canteen foods were most often thrown in garbage. As a result of these efforts, certain items were removed from the regular menu.
1. What do you think did the students do to gather the needed data?2. How did they know which foods were most often thrown in the garbage?3. If you were to do the same, how will you do it?
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06/04/22

Which of the following is not a bivariate data?
Which of the following is not a bivariate data?A. Study a group of college students to find out their height and their weightB. Study a group of diabetic patients to find their weightsC. Study a... more
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06/04/22

Answer the following :
A Senior High School in the Division of Negros Oriental reported that out of 5000 Academic Track students, 1800 are in General Academic Strand (GAS), 2050 are in HUMSS, while all the rest belong to... more
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06/04/22

Which of the following is not a bivariate data?
9. Which of the following is not a bivariate data?A. Study a group of college students to find out their height and their weightB. Study a group of diabetic patients to find their weightsC. Study a... more
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06/02/22

Should we adjust for multicollinearity before or after feature selection?
I am conducting a regression analysis with a data set that has high multicollinearity with high VIF values. I adjusted for it before my feature selection, and I also tried adjusting for it only... more
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Statistics

06/01/22

explain please.
A manufacturer knows that their items have a lengths that are skewed right, with a mean of 9.5 inches, and standard deviation of 1.8 inches.If 48 items are chosen at random, what is the probability... more
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Statistics Sas

06/01/22

glimmix dist=lognormal vs autoreg

I am working with time series data in SAS proc glimmix. When I change the dist=lognormal, the models fit much better. My question is, would this be an acceptable approach vs autoreg? From my... more
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Statistics

05/31/22

How do I solve for mean and standard deviation using two percentiles?
Consider a normal distribution curve where 60-th percentile is at 17 and the 5-th percentile is at 9. Use this information to find the mean,  , and the standard deviation,  , of the distribution.
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Statistics

05/31/22

A code is composed of letters and digits. Determine how many different codes of 2 digits followed by 5 letters are possible if the letters and digits cannot be repeated.
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Statistics

05/30/22

statistics problem
1. You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 19%. You would like to be 94% confident that... more
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Statistics Math Mathematics

05/30/22

Sample Sizes Confidence Intervals
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 23%. You would like to be 99% confident that your... more
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Statistics Math Mathematics

05/30/22

Stats Confidence Intervals Sample Size
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 23%. You would like to be 99% confident that your... more
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Statistics Math Mathematics

05/30/22

Statistics: Confidence Intervals (Sample Size)
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p = 0.11. You would like to be 96% confident that... more
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Statistics Math Mathematics

05/30/22

Sample Size Confidence Intervals
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=66.2. You would like to be 90% confident that... more
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Statistics Math Mathematics

05/30/22

Confidence Intervals (Sample Size)
You want to obtain a sample to estimate how much parents spend on their kid's birthday parties. Based on previous study, you believe the population standard deviation is... more
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