Explain the difference between p-value and Test Statitic.

Q: How would I decide which best describes the shape of the distribution of these 11 scores? (bimodal,…

A: Mean:The formula for finding mean is shown below:

Q: test statistic and P vaule?

A: Consider the following: Friday the 6th Friday the 13th Difference = Friday the 6th - Friday the…

Q: t does a z-score of -3.8 mean

A: A z-score is known as the standard score that determines how much the data point deviates from the…

Q: What are test specificity and test sensitivity?

A: Specificity and sensitivity are two statistical measures to determine the efficiency of a binary…

Q: Hello, I need help with sign tests and how to find the test statistic and p-value.

A: A nonparametric test is a hypothesis test that does not require any specific conditions concerning…

Q: Among 2897 female atom bomb survivors, 1332 developed thyroid diseases. Among 1212 male atom bomb…

A: The number of female atom bomb survivors The number of female survivors of thyroid diseases The…

Q: How do I interpret the mean of 12.5 and median of 12.5 with no repeating so there is no mode? How…

A: Given that  Mean = 12.5  Median = 12.5

Q: Describe the basic characteristics that define an independent-measures, or a between subjects,…

A: Solution-: Describe the basic characteristics that define an independent-measures, or a between…

Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the…

A: It is given that the mean monthly mileage of cars rented in the U.S. this year is greater than last…

Q: An experiment was conducted to determine whether a deficiency of carbon dioxide in the soil affects…

A: The formula for mean is, Mean=∑xii=1nn where, xi be the observations and n be the number of…

Q: Periodically, Merrill Lynch customers are asked to evaluate Merrill Lynch financial consultants and…

A:

Q: What is the significance of the sig level, alpha level and t test when doing statitics?

A: What is the significance of the sig level, alpha level and t test when doing statitics?

Q: Has To answer that question, we consider the Cherry Blossom Race, a 10-mile race ru Washington D.C.…

A: note that,  population standard deviation is known.

Q: How does the mean age of employees affect their performance? Why is there a need to strictly…

A: It is given to determine whether or not the mean age of employees affect their performance.

Q: Set up the structure of an appropriate statistical test to determine whether the resistance of the…

A: Motor Running (x)Motor Not…

Q: When is it appropriate to use a one-sample Z test and how is this value similar to a simple z or…

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 type of statistic test would I perform for this questions, Is there a relationship between…

A: Chi-square test:   A single simple random sampling is done with each individual being classified…

Q: B. There is no significant difference between the perceived level of riskiness of rebellious…

A: Given Data : Mean : Males = Sum / n  = 20.533/10 = 2.0533 Mean : Females = Sum / n  = 17.791/10 =…

Q: A research scientist wishes to test the claim that the mean number of units taken by community…

A: Given,  Population mean =μ=8Sample size =n= 34

Q: Using the p-value method, should be rejected at the  level of significance?  Why or why not?

A: We performed t-test for difference between two means assuming equal variances in Excel. Test…

Q: (a) What are the null hypothesis H. and the alternative hypothesis H, that should be used for μ the…

A: Null and alternative hypotheses: Null hypothesis: Null hypothesis is a statement which is tested for…

Q: Explain ways in which we use the independent sample t-test vs. paired sample t-test?

A: Independent sample t-test vs. paired sample t-test

Q: Hello, I need help with sign tests and finding the test statistic and p values.

A: A nonparametric test is a hypothesis test that does not require any specific conditions concerning…

Q: An online poll asked: "Do you believe the Loch Ness monster exists?" Among 22,436 responses, 64%…

A: Let p denotes the proportion of people believe that Loch ness monster exists. The hypothesis for the…

Q: Researchers examined the influence of a television program on children's aggressiveness. The number…

A: Given Solution:

Q: how do I find the test statistics and pvalue using excel or statcrunch? thank u

A: It is given that out of 308 orders, it is found that 37 are inaccurate. The sample proportion is…

Q: What Statistical test should I use to determine if 19 different Locations contribute to no-show up…

A: Null and alternative hypotheses: The investigator is specifically interested to test whether less…

Q: What are two reasons that some people in the field believe significance testing should be banned?…

A: Here we want to discuss reasons that some people in the field believe significance testing should be…

Q: Test the independence of the two variables in the table below: Enter the test statistic (to 4…

A:

Q: What Statistical test should I use to determine if Gender contributes to no-show up for…

A: Given information: Consider the contingency table for the gender and show up for appointments:…

Q: List the types of Sensitivity Analysis?

A: Sensitivity Analysis deals with finding out the amount by which we can change the input data for the…

Q: Discuss all possible factors that would affect the validity of test scores

A: A test score is the value of the test statistic when the values of the parameter are put.

Q: What is the sample variance and standard deviation for the data set 9,10,11,33,4 ? Show all work.

A: Given data(x) : 9,10,11,33,4 n = 5 x x2 9 81 10 100 11 121 33 1089 4 16 ∑x=67…

Q: Describe about the Level of Significance or p -Value?

A: Level of significance: The significance level is a value used as a criterion for deciding how small…

Q: Explain the uses and misuses of statistic , support ur answer with logical reasoning

A: There are so many uses of statistics as below: 1) Statistics provides a good representation of data…

Q: Conduct an independent - samples t-test to examine the difference between the mean ratings of the…

A: The objective of this question is to conduct an independent-samples t-test to examine the difference…

Q: Explain about two-tailed p-values.

A: Two tailed test: In two tailed test, the rejection lies in both sides. That is less than or greater…

Q: Periodically, Merrill Lynch customers are asked to evaluate Merrill Lynch financial consultants and…

A:

Q: Show the difference between two approaches to significance testing?

A: The two approaches to significance testing are p-value approach and critical value approach.

Q: What is an appropriate statistic to use for whether race/ethnicity (white, person of color) affects…

A: Test is that whether race/ethnicity affects whether or not people feel safe in their neighborhood.

Q: what does it mean to have a z-score between -1 and 1? Does that include decimals like 0.341 and…

A: A standard Z-score describes the number of standard deviations above or below the mean.

Q: Do a significance test for a specific comparison?

A:

Q: Can you explain how you find the p-value of the test statistic

A: The test statistic is -2.25 and the degrees of freedom is 80.

Q: National park services, a bureau of the US government responsible for park management, is interested…

A: For current year: The mean can be obtained as: Thus, the mean is 74.56. Arranging the data set into…

Q: What is the mean to the raw score of 8, 10, 17, 22, 6, 20, 21, 22, 19, 30?

A: Given data is ,8 ,10 , 17 , 22 , 6 , 20 , 21 , 22 , 19 , 30sample size(n)=10

Q: t will you use for the sample research relationship between academic stressors and learning…

A: The chi-square test of independence is known as the method that is used to define whether there is a…

Q: Survey was conducted about real estate prices, Data collected is 106,427, 231,714, 372,706, 423,646,…

A:

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.