8,918 Answered Questions for the topic statistics

Statistics

04/15/24

Find the regression​ equation

Find the regression​ equation, letting the first variable be the predictor​ (x) variable. Using the listed​ lemon/crash data, where lemon imports are in metric tons and the fatality rates are... more
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Statistics

04/15/24

what is the p value
Test the claim that the proportion of people who own cats is significantly different than 30% at the 0.02 significance level. Based on a sample of 800 people, 39% owned catsThe p-value... more
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Statistics

04/12/24

Introduction to statistics
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 70.3 inches tall. ( to 2 decimal places)
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Statistics Python

04/10/24

Construction of 21 by 21 total games matrix in python

I have 8 by 8 matrix for possible game scores during a set of tennis, for example 6,0 6,1 0,6 1,6 tiebreaks represented like 7,6 and 6,7. Assuming matrices for 2nd and 3rd set are the same,... more
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Statistics Biostatistics

04/09/24

*URGENT* Unsure of which statistical test to use
I am assessing the effect of premature birth on cognitive development. I conducted a survey with quantitative answers on a scale (e.g., how easy to you find mathematics? Very hard, moderately hard,... more
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Statistics

04/08/24

Find the population standard deviation and round to one more place than the data
15,18,13,9,12
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Statistics Math Probability

04/07/24

Probability & Statistics Finding the Confidence Interval
You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 69 74.8 68.5 59.4 92.7 82.2 74.7 56.7 71.8 73.3 69.6 Find the 99% confidence interval. Enter... more
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Statistics

04/05/24

help me please to solve this problem
You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 71.3 69.2 68 62.8 98.6 26.2 63.8 60.3 Find the 80% confidence interval. Enter your answer as... more
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Statistics

04/05/24

Can you leave a tip/pay your tutor over their hourly rate?
If the tutor does an exceptional job can you pay them over their hourly rate?
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Statistics Math

03/29/24

Standard Normal Probabilities Extremes

Hello! I need help understanding how to find the answer using the table. I am currently in college level Elementary statistics. Determine the value of z* such that satisfies the conditions below.... more
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Statistics Math

03/25/24

A seed has a 40% probability of growing into a healthy plant. 5 seeds are planted. Round answers to no fewer than two decimal places.
What is the probability that any 1 plant grows?What is the probability that the number of plants that grow is exactly 1?What is the expected number of plants that grow successfully?What is the... more
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Statistics

03/23/24

Help with number 5
Given the two independent samples below, conduct a hypothesis test for the desired scenario. Assume all populations are approximately normally distributed. Sample 1 Sample... more
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Statistics

03/23/24

Help on number 4
Given the two independent samples below, conduct a hypothesis test for the desired scenario. Assume all populations are approximately normally distributed. Sample 1 Sample... more
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Statistics

03/23/24

Help on number 2
A student at a four-year college claims that mean enrollment at four-year colleges is higher than at two-year colleges in the United States. Two surveys are conducted. Of the 35 four-year colleges... more
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Statistics

03/23/24

Please help on number 4

Sample 1 Sample 2   124   137   28.6   24.9  4.8  5    Test the claim:Given the null and alternative hypotheses below, conduct a hypothesis test for .: :  Given the alternative hypothesis,... more
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Statistics Microsoft Excel

03/22/24

How to calculate the sample size for a survey without margin of error?
I'm doing a survey for my dissertation and I need to know how many people to interview. I want to calculate the sample size for this using Excel but I don't know how. Every source I read says I... more
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Statistics

03/22/24

Statistics- THank you

A random number generator picks a number from 5 to 58 in a uniform manner. Round answers to 4 decimal places when possible. The mean of this distribution is Correct The standard deviation... more
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Statistics

03/21/24

Statistics-I need help please

With one method of a procedure called acceptance sampling, a sample of items is randomly selected without replacement and the entire batch is rejected if there is at least one defective unit. The... more
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Statistics

03/21/24

I need help with this please. Statistics

The table summarizes results from 989 pedestrian deaths that were caused by automobile accidents. Pedestrian DeathsDriver Intoxicated?Pedestrian... more
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Statistics Probability

03/21/24

probability stats

The grade appeal process at a university requires that a jury be structured by selecting four individuals randomly from a pool of nine students and nine faculty.​ (a) What is the probability of... more
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Statistics

03/21/24

Please Help me Solve This Statistics Problem
Conduct a two-sample t-test to determine if college freshman and seniors have a significantly different number of speeding tickets. Using the data below, counduct a two-sample t-test. Show your... more
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Statistics

03/21/24

Will Someone Please Help Me With This Statistics Problem?
Conduct a two-sample t-test to determine if college freshman and seniors have a significantly different number of speeding tickets. Using the data below, counduct a two-sample t-test. Freshman: 2,... more
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Statistics

03/20/24

Confident interval estimate

A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the​ drug, 1111 subjects had a mean wake time of 95.795.7 min... more
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Statistics Math Computer Science

03/20/24

Statistical test for percentages values with different denominators !!!
Hello, What statistical test can you do with percentage values that do not have the same sample size (do not have the same denominator). For example : 43/53, 21/30, 11/24 would be 81% , 70% , 46%... more
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Statistics

03/19/24

Statistics i need help
Driver Intoxicated Pedestrian Intoxicated Yes yes no 41 80 275 589 above the 80 No is in that box. If two different pedestrian deaths are randomly selected, find the probability that they... more
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