8,918 Answered Questions for the topic statistics

Statistics

07/20/24

Can a correlation coefficient be determined from a histogram?
If two histograms were made for two paired variables, for example, a histogram for money spent on marketing and a histogram for the revenue gained afterwards, can a correlation analysis be... more
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Statistics Math

07/19/24

T value and P value
Professor Jennings claims that only 35% of the students at Flora College work while attending school. Dean Renata thinks that the professor has underestimated the number of students with part-time... more
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Statistics

07/10/24

About 9% of the population has a particular genetic mutation. 188 people are randomly selected. Round both answers to the nearest 2 decimal places.
Find the mean for the number of people with the genetic mutation in such groups of 188.Find the standard deviation for the number of people with the genetic mutation in such groups of 188.
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Statistics

07/05/24

Recording keeps the screen my tutor is on small
I'm trying to review a video from my tutorial, but the screen my tutor wrote the math on stayed small in the top right corner, so the recording must not have been aware that I had it at full... more
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Statistics

07/03/24

Wyzant lesson did not get recorded for later viewing
My lesson did not get video recorded
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Statistics

06/29/24

basic stats questions

Over the past several months, an adult patient has been treated for tetany (severe muscle spasms). This condition is associated with an average total calcium level below 6 mg/dl. Recently, the... more
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Statistics

06/25/24

For a standard normal distribution, find: P(z > c) = 0.6607
For a standard normal distribution, find:P(z > c) = 0.6607
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Statistics Probability

06/24/24

Probability: Prison Escape
A person is kept in a dark, underground prison that has three tunnels out of it. If he picks the first tunnel, he will escape to freedom after 30 minutes of walk. Taking the second tunnel would... more
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Statistics Spss

06/14/24

Correlation cannot be calculated

I am trying to identify correlation between a continuous and a dichotomous variable. Once I collected the data I found that all values for dichotomous variable are same, which makes it a constant.... more
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Statistics

06/10/24

How to interpret standardized residuals (chi square independence analysis)?
Firstly, when and why is it appropriate to use standardized residuals to accept either the null hypothesis or alternative hypothesis? When is not appropriate?Secondly, how can standardized... more
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Statistics

06/08/24

How do I solve this step by step? Please help!
A researcher investigating fetal alcohol spectrum disorder (FASD) enrolled 7 children into a choline supplement trial. The children completed the O’Connor Finger Dexterity Test before and after a... more
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Statistics

06/08/24

Statistics question
A binomial probability experiment is conducted with the given parameters. Compute the probability of x successes in the n independent trials of the experiment.n=30, p=0.97​, x=28P(28)=enter your... more
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Statistics

06/06/24

How do i interpret summary statistics and frequency tables?

I need to know how to interpret summary statistics (for quantitative variables) and frequency tables (for categorical variables), but specifically for finding discrepancies in the data set. For... more
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Statistics Probability

05/26/24

baseball probablity
The table of data obtained from WWW.BASEBALL-ALMANAC.COM shows hit information for four well known baseball players. Suppose that one hit from the table is randomly... more
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Statistics

05/24/24

I would like to talk to the tutor before getting started on a new lesson plan for AP statistics.

Teachers name is Richard S and obtain more information about times and study plan for my daughter.
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Statistics

05/16/24

Tried to solve it but it was wrong
Medical research has shown that repeated wrist extensions beyond 20 degrees increase the risk of wrist and hand injuries. Each of 24 students at a university used a proposed new computer mouse... more
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Statistics

05/16/24

Statistics Question
The data below represents the number of hits on your web site over 10 months. x 1 2. 3. 4 5. 6. 7. 8. 9. 10 y 22. 39 70. 126. 227. 408. 735. 1322. 2380. 4285 Use your answers from parts a and b to... more
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Statistics

05/16/24

Confused on how to solve
Let x1, x2, . . . , x100 denote the actual net weights (in pounds) of 100 randomly selected bags of fertilizer. Suppose that the weight of a randomly selected bag has a distribution with... more
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Statistics Math Probability

05/16/24

Probability of a pair of dice
Consider rolling a pair of fair dice a single time. For a given roll, consider the value shown on each of the dice. For each of the following pairs of events, tell whether they are disjoint,... more
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Statistics

05/13/24

Below is a table of data that have been collected.

Below is a table of data that have been collected Price,�,($)Weekly Demand,�,(1,000s) 150 216 170 201 190 192 210 191 230 177 250 171 To the nearest 100, what does the model predict... more
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Statistics

05/09/24

The combined SAT scores for the students at a local high school are normally distributed with a mean of 1485 and a standard deviation of 298.

The combined SAT scores for the students at a local high school are normally distributed with a mean of 1485 and a standard deviation of 298. The local college includes a minimum score of 1574 in... more
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Statistics

05/09/24

The mean NAT scores of Grade 10 students is 65. Sixty students where chosen and found that the standard deviation of their scores is 5. What is the probability that their mean is below 64?
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Statistics

05/09/24

In her MAT135 class, professor Alayeb found that the mean score of the first exam was 96. Suppose that the scores are normally distributed with a standard deviation of 19 points.
What is the probability that a randomly selected score is less than 71? P(x < 71)=
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Statistics

05/09/24

In her MAT135 class, professor Alayeb found that the mean score of the first exam was 96.

what is the probability that a randomly selected score is between 71 and 82 ? ( 71 < x < 82) = 
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Statistics

05/08/24

The combined SAT scores for the students at a local high school are normally distributed with a mean of 1485 and a standard deviation of 298.
The combined SAT scores for the students at a local high school are normally distributed with a mean of 1485 and a standard deviation of 298. The local college includes a minimum score of 1574 in... more
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