7) Your Statistics teacher refused to give you your real grade, but told you that your z – score was 2.5. Using Chebychev's and Empirical Rule, how happy or unhappy are you about the information?

Q: .What percentage of females are smokers?  2.What percentage of people who do not smoke are males?…

A: Cross tabulation helps a researcher to analyze the results of bivariate relationship between the…

Q: This is rejecting Ho when it is true. If the alternative hypothesis says not equal to we know are…

A: We have to match the given definitions with the given terms.

Q: For Bonferroni, how would you report your results? A Bonferroni post hoc test (p < .05) revealed…

A: It can be observed from Bonferroni outcome that the p-value for the difference between group-2 and 1…

Q: How the correlated t test is computed by first computing the difference between the two scores?

A: The computational procedure is to compute the difference between each pair of observations and test…

Q: The statistics department installed energy-efficient lights, heaters, and air conditions last year.…

A: Given: μ=3124 Claim: The average monthly energy usage has decreased. Type of the test: This test…

Q: A student calculates the value of r as +0.72 for a question comprising 5 pairs of observations and…

A:

Q: If the p-value associated with a test statistic is less than .05, that means: The odds that the…

A: P-value: P-value is defined as the probability of obtaining a result at least as extreme as the…

Q: What information is provided by calculations of the “chi-square” test statistic?

A: The chi-square test statistics, it could be calculated:

Q: What information is provided by the sign (+/–) of a z-score? What information is provided by the…

A: Let, the dataset scores have a mean µ and standard deviation σ. Then the z score of a given score ,…

Q: The mean score on a standardized math skills test is known to be 50 for the entire U.S. population…

A: Research is the method that used to obtain information abou the population. Or to known something…

Q: What information is provided by calculations of the “t” test statistic?

A:

Q: Your medical research team is investigating the mean cost of a 30-day supply of a certain heart…

A: Claim: The mean cost of a 30 day supply of a certain heart medication is more than $97 The symbolic…

Q: Suppose you want to compare Mu_a and Mu_b, which are the true mean stopping distances for two…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: Step 5: There sufficient evidence to conclude that

A: Given : x1= 68.0 n1= 240 x2= 43.0 n2= 151 significance level, 0.01

Q: What statistical tool is appropriate if the number of data is large and O is known?

A: Here we need to find out the statistical tool if the number of data is large and standard deviation…

Q: If a z-score is 0, it is on the mean. True or False

A:

Q: Can you help me determine the test statistic and P-value of the following equation?

A: Hypothesis testing plays a major role in research and development. To diagnose the underlying cause…

Q: Suppose you are interested in testing whether the mean earning of men is representative of the…

A: Given info: Suppose you are interested in testing whether the mean earning of men is representative…

Q: n Statistics, what kind of graphs are required to present this data? And what other kind of test of…

A: A boxplot is a great option to compare between two or more groups of data based on a five-point…

Q: that the mean score of these 53 students is 147.9. Is this significantly different from the national…

A: Given: Sample size, n = 53 Mean,  Population mean,  standard deviation,

Q: Suppose you are interested in testing whether the mean earnings of men in the General Social Survey…

A: Given information average male in the population of U.S earned $33,405 in 2005 average male in the…

Q: Is “how long it takes to correctly solve the puzzle” an explanatory variable or response variable?…

A: The variable that explains the expected cause, i.e., in other words, the variable that explains the…

Q: The correlation between the number of uninsured in 2006 and 2007 is calculated to be: 0.998067. Can…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Suppose that the data are sampled from a normally distributed population. Using the empirical rule,…

A: Empirical rule: For a normal distribution, the approximate values that fall in the specified…

Q: Human body temperatures have a mean of 98.60° F and a standarddeviation of 0.62° F. If Sally’s body…

A: Let X be the human body temperatures that follows normal distribution with mean of 98.60-degree F…

Q: If the errors produced by a forecasting method for 3 observations are +3, +3, and −3, then what is…

A:

Q: What information is provided by calculations of the “F” test statistic?

A:

Q: What are the assumptions for t test for the population correlation coefficient?

A: Correlation: Correlation is the measure of association between two variables in which one variable…

Q: I cannot find the test statistic for the image of the problem

A: For sample 1 (With almonds): xi xi-x (xi-x)2 3 1.142857 1.306122122 1 -0.85714 0.734694122…

Q: 4. There is a significant difference between the proportion of male and the proportion of female…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Under what circumstances is a score that is 15 points above the mean an extreme score relatively far…

A: Introduction: Consider X as a normally distributed random variable, with mean μ and standard…

Q: Explain why the F-ratio is expected to be near 1.00 when the null hypothesis is true.

A: Given Null Hypothesis is true which indicates the treatment has no systematic effect The error term…

Q: 5. What conclusions can you draw from the data gathered from one small bag compared to several small…

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

Q: s there a significant relationship between subject’s IQ and pre-test scores?α =.05, two tailed, if…

A: We perform a hypothesis test of the “significance of the correlation coefficient” to decide whether…

Q: How do you tell if a ANOVA is significant given the F value, p value, and eta squared? What does the…

A: In ANOVA, the null hypothesis is that there is no difference between group methods. If any group…

Q: What is the empirical rule?

A: The word 'empirical' stands for 'based on observations.  The 68–95–99.7 rule, also known as the…

Q: What are the assumptions when you use a Z score?

A:

Q: Suppose that you want to do statistical significance tests for four correlations and you want your…

A: It is given that the number of correlation is 4 and EWa is 0.05.

Q: Suppose that you want to do statistical significance tests for four correlations and you want your…

A: According to the provided information, the number of correlation is 4 and the significance level is…

Q: What do you mean by Instrumental Variables Estimators in relation to quasi-experiment?

A: An instrumental variable (IV) is the variable that is used in regression analysis to estimate the…

Q: Sarah thinks that she has lost interest in online shopping. Based on her shopping history, she can…

A: The null hypothesis is a simple statement about the value of the population parameter which is…

Q: The claim is that the proportion of peas with yellow pods is equal to 0.25​ (or 25%). The sample…

A: Given that, x=117,n=450,p=0.25 The sample proportion is,

Q: In a test of significance, the hypotheses are stated in terms of: statistics. statistics or…

A: Answer : we know that test of significance  is a procedure to access the truth of a hypothesis…

Q: Using a significance level of α = 0.05, state your conclusion in terms of H0.?

A: According to the provided information, the level of the significance level is 0.05. The level of…

Q: what information is provided by the (+/-) of a z-score?

A: The z score tells us that the how far the mean is from the data point. The formula for z score is,…

Q: A social worker notes that in a population of psychiatric inpatients the ethnic mix seems out of…

A: The social worker noted that in the population of psychiatric inpatients the ethnic mix seems out of…

Q: Suppose the relationship between Y and X is given by: Y = 30 - 25X + error  What is the expected…

A: Given : Y = 30 - 25X + error

Q: Find the P-value in a test of the claim that the mean IQ score of acupuncturists is equal to 100,…

A: From the provided information, The mean IQ score of acupuncturists = 100 The hypotheses can be…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.