When finding p value and critical value how do I learn how to read the table of a scores,  like how to know if I shoud look on the negative or positive side?

Q: Calculate the value of the test statistic.   Find the P-value.   Reject or Fail to Reject?

A: Here from given data calculate sample standard deviation

Q: Sample mean is always an estimator of the population mean, thus we use the degrees of freedom to…

A: Given that  Sample mean is always an estimator of the population mean, thus we use the degrees of…

Q: What Happens in Vegas … Listed below are prices in dollars for one night at different hotels located…

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Q: 1. Sara is taking a flying course and had to write six tests. Her results were: 65, 66, 100, 63, 64,…

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Q: Every year, the students at a school are given a musical aptitude test that rates them from 0 (no…

A: Mean= total score/total frequency =15/15 =1 Median = (n+1)/2  frequency term…

Q: The accompanying table summarizes successes and failures when subjects used different methods when…

A: The given P-value is 0.003. Decision rule: If P-value≤α, then reject the null hypothesis. Otherwise,…

Q: Extreme/usual scores that can impact results are called:

A: Solution: Outliers: Outliers can be defined as outliers are the extreme observation that are…

Q: The research office is interested in the possible relationship anxiety and aptitudes cores of…

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Q: Using inferential statistics, it is commonly possible to say that you have 100% confidence in a…

A: It is an important part of statistics. It is widely used.

Q: Degree of freedom is an important factor in determining the size of a sample. And it's value is…

A: Sample size and degree of freedom have relationship  Df = n-1

Q: List 5 examples of ways to analyze data * Mean, Regression, Determination,Hypothesis If I found the…

A: Part a: Ways to analyze data:      1. regression analysis      2. Hypothesis testing,      3.…

Q: 31. What do we get from the following when the whole data is added and the sum is divided by the…

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Q: The number of hours per week that the television is turned on is determined for each family in a…

A: Given that mean = 32 hours Median = 28.2 hours 7th percentile = 17 hours

Q: True or False: For both AIC and BIC (two statistics we often use to compare model fit), the model…

A: Solution: AIC ( Akaike's Information Criteria ) and BIC ( Bayesian Information Criteria ) are the…

Q: Changing the value of a single score in a distribution will always change the value of the Mean O…

A: Mean: The arithmetic mean (also called the mean) is the most commonly used measure of central…

Q: how do you find z score from a P value in statistics?

A: We habe to find z score from p value.

Q: The number of hours per week that the television is turned on is determined for each family in a…

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Q: Find the mean, median and mode for the following set of data;

A: Reviewing information, Given data, C.I. Frequencies 10-20 5 20-30 7 30-40 9 40-50 15…

Q: An average is an attempt to summarize a collection of data into just one number.Discuss how the…

A: Mean:The arithmetic mean (also called the mean) is the most commonly used measure of central…

Q: Hypothesis tests are often done by comparing the calculated P-value with a quantity α. What does α…

A: GivenHypothesis tests are often done by comparing the calculated P-value with a quantity α

Q: How would you explain conducting a scatter graph to someone who has never heard of correlation (but…

A: Scatter graph is a graph that is drawn to visualize the relationship between two variables ,x and y,…

Q: Let’s say there is a psychologist who is investigating cultural differences in emotional expression…

A: A null hypothesis is the statement to be tested in the hypothesis testing.

Q: What method would you use to approximate the percent of women who lie within 2 standard deviations…

A: Given that,   Number of movies(x) frequency(f) f*x 20 25 500 21 10 210…

Q: We have provided simple data sets for you to practice the basics of finding measures of variation.…

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Q: The mean of the sample means is equal to the population mean? True or False. Explain

A: The mean of the sample means can be very close to the population mean when the sample is very large…

Q: ______________ was the first person to use the word “Statistics”. In a Box Plot the 75th Percentile…

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Q: We have provided simple data sets for you to practice the basics of finding measures of variation.…

A: a) Range: Range is the difference between maximum and minimum value in a data set. In the given data…

Q: Twenty different statistics students are randomly selected. For each of them, their body temperature…

A: The given variables are body temperature and their head circumference.

Q: The data set represents the number of errors on a typing test what is the median tell me what this…

A: Measure of central tendency measures the central or average value of a dataset. Mean, median and…

Q: Ten students take a 10-point test. The mean score is 8. Could the median be 10? Could the median be…

A: Solution-: Ten students take a 10-point test. The mean score is 8. Could the median be 10? Could the…

Q: The mean describes an entire sample with a single number that represents the calculated by of the…

A: To define mean.

Q: How might an extreme value in the sample data set affect the value of the median? (A) An extreme…

A: From the given information,

Q: What does the P-value represent

A: The P-value is the probability of getting test results as extreme as possible as observed results,…

Q: Let the paired difference be the score before minus the score after attending the counseling…

A: Introduction: Denote μd is the true mean difference in depression scores before and after counseling…

Q: tatistical power is a measure of how likely it is for a statistical test find a significant…

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Q: How to find the z score in statistics

A: Given, How to find the z score in statistics.

Q: What is the preferred measure of central tendency for scores measured on an ordinal scale? O the…

A: Mode of a data set is the observation, which has highest frequency. Median of a data set is the…

Q: find a test statistics and the P value

A: The sample proportion is, p^=xn=1586211=0.0254 The sample proportion is 0.02544. The test statistic…

Q: FIRST OPTION 1. What is the data value associated with a z-score of 2? 2. What is the data value…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: Who is the better player based on mean score? Who is the more consistent player? Why?

A: Here use basic of mean , and measure of consistency

Q: 2) A population has μ = 100 and σ = 20. If you select a single score from this population, on the…

A: Introduction:It is given that the population mean is 100 and the population standard deviation is…

Q: 1. Measure of central tendency refers to the “center/ average of the data”. Which among the 3…

A: The three measures of central tendency are Mean, Median, and Mode. All are important in their own…

Q: Sample mean is always an estimator of the population mean, thus we use the degrees of freedom to…

A: Sample mean: It is the sum of the observations divided by the total number of observations of the…

Q: The average home in the US is expected to cost $240,000. A random sample of 56 homes sold this month…

A: From the provided information, Sample size (n) = 56 The hypotheses can be constructed as: H0: µ =…

Q: Performing a statistical analysis on managers and employees, and we need to determine whether the…

A: Level of significance: Level of significance is the probability of rejecting the null hypothesis H0,…

Q: We have provided simple data sets for you to practice the basics of finding measures of variation.…

A: There are various measures of spread. Some of these are: Range Standard deviation Variance and so…

Q: What statistical test should she use to analyze the data?

A: Answer: From the given data We use Chi square test of Independence test to analyze the data

Q: A child says that the median of 3 , 14 ,  18 ,20 , 5 is 18 .What doesn't the child understood about…

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Q: please help me find the test statistic and p-value

A: The given data represents the response of the women when the interview was done by men and women.

Q: The number of hours per week that the television is turned on is determined for each family in a…

A: The mean of the data 33 hours The median is 29.2 hours Twenty four of the families in the sample…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.