Determine degree of freedom, right tailed area, t-value

Q: Psychology students at a university completed the anxiety Scale questionnaire. Scores on the scale…

A: Given Data : Population Mean,μ = 10.5 Population Standard Deviation,σ = 2.0

Q: statistics teacher realize that his students keep using cell phones during the class. Then he did…

A: The mean difference between the sample and the population is tested for sample with small sample…

Q: Q4/ A / Calculate the Quartile Deviation (Q.D) and coefficient of Q.D. for the data: ( 230 , 620 ,…

A: AS per our guidelines we are suppose to answer first question

Q: Weather in the tropics has a mean of 98.2o and a standard deviation of 0.62o. Find each z-score and…

A: Given that μ=98.2 and σ=0.62 a) z-score: z=score-μσ  =100-98.20.62 =2.9032   Condition for Unusual:…

Q: How do you construct a residual plot using Statcrunch?

A: Regression analysis is a method of predicting the value for the one variable by the known value of…

Q: Help me understand how to find the Quartiles

A: Given : data To find: quartiles

Q: (c) Do the occupancy data for the 120 flights suggest that this scheduled flight is unprofitable?…

A: Given informaton:

Q: Assume that math test scores are normally distributed with a mean of 500 and a standard deviation of…

A:

Q: What is the decision rule for the t-test that the mean child mortality rate for countries in Eastern…

A: It is tested that the mean child mortality rate for countries in Eastern Europe is more than the…

Q: What are the examples of parameter and examples of statistic

A: Parameter : It is numerical characteristics of population. Parameter name : Population meanμ,…

Q: The breaking strengths of cables produced by a certain manufacturer have historically had a mean of…

A: Given information Sample mean x̅ = 1905 pounds Population mean µ = 1900 pounds Sample size n = 90…

Q: The average wait time to get seated at a popular restaurant in the city on a Friday night is 14…

A: The hypotheses to be tested are:H0: μ = 14, that is, the population mean is 14.Versus:H0: μ ≠ 14,…

Q: How do you compute the range, interquartile range and standard deviation

A: formula's of Range , Interquartile range and standard deviation.

Q: Human body temperatures in degrees Fahrenheit have a distribution that assumed to be symmetric and…

A: given data  normal distribution μ = 98.6σ = 0.9 hypothermic : bottom 1 % fever : top 1.5%

Q: What are the statistical techniques used to measure the dispersion? Give an example?

A: The statistical techniques which are used to measure the dispersion are variance, standard…

Q: For the frequency distribution shown, compute : mean , median , mode , mean deviation , sample…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: Define P-value?

A:

Q: Find the value of the x² test statistic

A: Based on the observed and expected values and expected values,the squared distances can be computed…

Q: Mountain Mouse makes freeze-dried meals for hikers. One of Mountain Mouse's biggest customers is a…

A: From the above given data the following solution is provided below:

Q: A survey of 9 popular restaurants is used to estimate the mean number of kitchen employees. Which…

A: A survey of 9 popular restaurants is used to estimate the mean number of kitchen employees.

Q: A producer claims that his potato chips weight is at least 150 grams. The weight of the bag has a…

A: Given: Night shift:   Day shift:

Q: Find out some examples for statistic and parameter?

A: To find some examples of Statistic and Parameter Statistic: The statistic refers to the number that…

Q: Are frequency distributions the only methods that researchers use to organize data?

A: For organization of data, researcher can use multiple ways for organizing data.

Q: Define most powerful test.

A: Define most powerful test

Q: Mean =7, median =10, standard deviation =3 Find the coefficient of skewness (round to two decimals)

A: Answer: From the given data, mean = 7 median = 10  and standard deviation = 3

Q: Before using these mean squares what does we must calculate?

A: Mean squares is nothing but the sum of the squares of the mean of the group   divided by the degrees…

Q: Mean=8, median =11, standard deviation = 5 Find the coefficient of skewness (round to two decimals)

A: Answer: From the given data, mean = 8 , median = 11  and standard deviation = 5

Q: Central tendency most used in psychology

A: Solution Yes Central tendency is very useful in psychology. It lets us know what is normal or…

Q: Graph this data in excel using a statistical test with Count, mean, standard deviation, standard…

A: Sure, I can help you with that. To analyze this data in Excel and perform the necessary statistical…

Q: explain the use of z-test

A: Solution-: Explain the use of z-test?

Q: Find X3.05 for x² distribution with 10 degrees of freedom.

A: To find the critical value for given for χ2-distribution. df = 10 Probability = 0.05

Q: Define most powerful test.

A:

Q: Explain how F-statistic has two types of degrees of freedom?

A: Introduction: Degrees of freedom can be defined as the number of values in an analysis, that can be…

Q: a standardize exam scores are normally distributed,in a recent year,the mean test scores was…

A: