Is the test statistic in the rejection region? how do you know ?

Q: What is the third quartile

A: We are asked to find the third quartile

Q: The test statistic is enter your response here.

A:

Q: What statistical analysis correctly analyzes the independent measure ( also known as in between…

A: Here we can say that for independent measures we use t-test for one sample and t-test for two…

Q: What is the conclusion about the t-statistic and the p-value?

A: Decision rule: If p-value ≤ α, then reject the null hypothesis. Otherwise, fail to reject the null…

Q: when is the significance level determined

A: The significance level defines that the probability of rejecting the null hypothesis when it is…

Q: nen testing for differences between treatment means, the degrees of freedom for the t-statistic are

A: In ANOVA while testing the difference between the treatment means the degrees of freedom for the…

Q: What is the null distribution of the test statistic? How do we know if it is normal or not, and how…

A: Points on the sampling distribution of the sample mean: If the true population distribution of a…

Q: Is the test statistic in the rejection region? How do you know?

A: The rejection region is defined as the interval under which if the sample test statistic falls, the…

Q: The Chancellor wants you to calculate a second sample size after sample 1 produced a 40% response…

A: From the provided information, Confidence level = 80% Margin of error (E) = 7% that is 0.07 Sample…

Q: What are the values of the test statistic and P-value for their test?

A: We have to conduct a Chi - square test of independence.

Q: When would you use a factorial ANOVA and what are the three F values that are calculated?

A:

Q: What is the moment generating function of the sample mean?

A: Mgf (i)Sample mean=x⏞=Σxin=x1+x2+..+xn10…

Q: A software company is interested in improving customer satisfaction rate from the 80% currently…

A: The Null and Alternative Hypotheses is given by: H0: p0=0.80 H1: p0≠ 0.80 The sample proportion is…

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 are the differences between histograms and Pareto diagram? Elaborate

A: Introduction :-  Here we have to explain what is the difference between histogram and Pareto…

Q: A software company is interested in improving customer satisfaction rate from the 61% currently…

A: It is given that x=176, n=267 and P=0.61.

Q: Describe the assumptions for ANOVA and explain how they may be diagnosed.

A: Introduction :-  There are some assumptions made to conduct ANOVA. We have to describe them and to…

Q: a. What is the 25th percentile of HDL in patients recelving the placebo? b What is median HDL. in…

A: a. First quartile: First quartile is the median of all the observations that are left to the…

Q: Interpret the test hypothesis either reject or not. And, how about the significant level?

A: Answer: From the given output, Test statistic = 2329.367 P-value = 0.0000 As p-value < 0.05, we…

Q: A software company is interested in improving customer satisfaction rate from the 61% currently…

A: Given data A software company is interested in improving customer satisfaction rate from 61%…

Q: Explain the meaning of the term hypothesis as used in inferential statistics.

A: Hypothesis testing:         Hypothesis testing was introduced by R.A.Fisher (Ronald Fisher).It is a…

Q: A hypothesis test is conducted to determine whether the percentage of US adults that think marijuana…

A: Given,n=400x=144p^=xnp^=144400=0.36

Q: What is the 40th percentile of wait times for customers calling the help line?

A: Here given  Amount of time customer wait is exponentially distributed with mean 7.5 minutes

Q: Explain the Process of Computing the p-value using the F-statistic?

A:

Q: A software company is interested in improving customer satisfaction rate from the 75% currently…

A: Hypotheses: The null and the alternative hypotheses are, H0:p=0.75H1:p>0.75

Q: A random sample of Americans were categorized according to their happiness and their income level.…

A: H0: Income and Happiness are independent HA: Income and Happiness are dependent

Q: If the test statistic falls within the rejection region, you reject H0 in favour of Ha true false

A: In this case, we need to identify the given statement is true or not.

Q: A software company is interested in improving customer satisfaction rate from the 55% currently…

A:

Q: What is the predicted response value? y =

A: Given Regression Equation : and,

Q: What effect does standardizing into z-scores have on the shape of the distribution of a variable?

A: Z scores implies that how far is your data value in terms of no. of standard deviation. In simple…

Q: Define probability of obtaining a sample statistic?

A:

Q: What is the predicted explanatory value? X =

A: The regression equation is y=-3.546x-4.393.

Q: Explain why is it important to use ANOVA instead of several t tests to evaluate differences between…

A: Using several t -test, increase the type I error. In anova type I error is less as compare to t-test…

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 software company is interested in improving customer satisfaction rate from the 55% currently…

A: The following information is provided: The sample size is N=247N = 247, the number of favorable…

Q: What effect does standardizing into z-scores have on the center (mean) of a variable?

A: What is Z-score and standardized variables:Z-score:The Z-score measures a particular value’s…

Q: What are the three characteristics of the z-score distribution?

A: We know that, if X has mean mu and standard deviation sigma then it's z score is given as, (X-…

Q: A software company is interested in improving customer satisfaction rate from the 54% currently…

A: Given, A software company is interested in improving customer satisfaction rate from the 54%…

Q: A historian examining British colonial records for the Gold Coast in Africa suspects that the death…

A: Solution : Given : n1 = 32693  n2 = 1536 x1 = 225 x2 = 8 α  = 0.05 To test the evidence that…

Q: Identify the P-value. What is the conclusion for this test?

A: It is given that the test statistic is 12.67.

Q: Based on the data and results of test for normality in the table, complete the parts of hypothesis…

A:

Q: A large department store examined a sample of the 21 credit card sales and recorded the amounts…

A: Given information- A number of types of credit cards (or no. of treatments) k = 3 No. of credit card…

Q: Explain how the significance level is related to the size of the test statistic and the probability…

A:

Q: What is the Standard test statistic?

A: Hypotheses:

Q: what is the p value? is the p-value low? can we conclude?

A: Answer 1: The intersection P-value is 0.11225061. Thus, the intersection P-value is 0.11225061.…

Q: A software company is interested in improving customer satisfaction rate from the 65% currently…

A: From the provided information, A software company is interested in improving customer satisfaction…

Q: Give and Explain the similarities and differences between the z-test, t-test and ANOVA.

A: Similarities and differences between z-test t-test  ANOVA are given below: