how to find a critical value from a z score, p, and significance level.

Q: One of the town council members believes that the two fire stations have different mean response…

A: Assume that the response times of fire station in Northern and Southern are independent. Further,…

Q: The following are body mass index (BMI) scores measured in 9 patients who are free of diabetes and…

A: Mean of the data is defined as a measure of the central tendency.  Mean of the data values is…

Q: test statistic and P vaule?

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

Q: 1). Explain why an extreme score or outlier (either a very high or a very low score) affects the…

A: It is needed to explain the reason that an outlier affects the mean more than it affects the mode…

Q: If the estimated power of a significance test is 0.6, it means that

A: The power of a significance test is basically the probability of not making type 2 error. The type 2…

Q: 1. What is the explanatory variable, and what is the response variable? 2. What are the populations…

A: 1. **Explanatory and Response Variables**: - The explanatory variable (independent variable) is…

Q: What is the inter-quartile range for the following data? You must show work. 27, 29, 29, 30, 24, 25,…

A: From the provided information,The data values in ascending order are as follow:4, 8, 17, 23, 24, 25,…

Q: Examine your ANOVA table to see if there is a significant difference between cannabis use and social…

A: Provided information is, two-way ANOVA was used to examine the effect of anxiety level and cannabis…

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: what is a composite outcome rate in statistics?

A: Solution Composite outcomes, in which multiple end points are combined, are frequently used as…

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: Drug Tests Use the data from the preceding exercise and test the claim that the rate of positive…

A:

Q: Test Statistics Value = -2.30 Degrees of freedom= 24 Level of Significance= 0.01   What is the…

A: From the provided information, Test statistic = -2.30 Degrees of freedom = 24 Level of significance…

Q: 2. Pick one of the three Measures of Central Tendency and explain a situation which would cause it…

A: The given tendencies are  Mean, median, mode

Q: wrong answer for letter c, it was asking the LOWER quartile.

A: Percent of calories consume by Americans follow normal distribution with mean 36  and standard…

Q: Use 9 steps of hypothesis testing (indicate test to use). Is there any evidence that leadership…

A:

Q: Construct a histogram that represents the following data regarding the score ranges for the…

A: The data is: Class Frequency 14 – 17 4 18 – 21 9 22 – 25 5 26 – 29 5…

Q: Many people believe that criminals who plead guilty tend to get lighter sentences than those who are…

A: The null and alternative hypotheses are: H0: The sentence (sent to person or not sent to person) is…

Q: Most universities and colleges require an SAT score as one of the inputs to an admissions decision.…

A: It is given that the SAT scores for 10 students and their college GPAs.

Q: If a P-value is .043, what does that mean in terms of the value obtained for the test statistic?

A: p-value is the probability of obtaining more extreme results under  null hypothesis, by more extreme…

Q: What is the distribution of a statistic based on a population parameter?

A: Population Parameter It is a characteristic of the entire population. The value of a population…

Q: Find the critical values of these situations: a. p-test, right tail, level of significance 7.5% b.…

A: a) Here, the level of significance is 0.075 and the test is right tailed.

Q: A professor wants to determine if the time of day that a class is held has any impact on exam…

A: We know that, significance level shows the probability that test will produce significant result.…

Q: Find the critical value for a test for correlation with a significance level of 10% and a sample…

A:

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: Distinguish between a distribution of sample means and a distribution of sample proportions.

A: Distribution of sample means and sample proportions are obtained.

Q: 2. Use t-test to determine if the new method of teaching science is more effective than the…

A: Given :

Q: What is the difference between a population and a sample? Which is described by a parameter and…

A: Determine the difference between the population and sample.   The difference between the population…

Q: What statistical method would you use when your variables are nominal and your measure of central…

A: Nominal variables are qualitative variables with categories having no natural ordering in it. For a…

Q: The distribution of the number of personal time off (PTO) days per year offered by different U.S.…

A:

Q: Salaries of the chief executives. According to the May 2013 National Occupational Employment and…

A: According to the May 2013 National Occupational Employment and Wage Estimates for the United States,…

Q: In a study of the accuracy of fast food drive-through orders, one restaurant had 32 orders that were…

A: From the provided information, The hypotheses can be constructed as: H0: p = 0.10 H1: p ≠ 0.10 The…

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: Rhino viruses typically cause common colds. In a test of the effectiveness of​ echinacea, 32   of…

A:

Q: The critical value(s) is(are) (Type integers or decimals. Round to two decimal places as needed. Use…

A: For sample size n, the degrees of freedom (df) is n – 1.

Q: A therapist who treats anorexic patients wants to compare two different designed for weight gain.…

A: (d). What decision can you make and what does that mean: The investigator is specifically interested…

Q: Discuss the difference and similarity between percentile and standard score norms.

A:

Q: Listed below are student evaluation of female professions and male professors. Use a 0.05…

A: The null and alternative hypotheses are: Here, µ1 is the mean evaluation ratings for female…

Q: Explain the difference between a Type I error and a Type II error.   Explain the connection…

A: We want to differentiate type 1 and type 2 error

Q: 7. If we change the significance level from 5% to 1% how will that change affect the pvalue for the…

A: P value is probability of getting extreme results than what is observed. *Suppose you are doing left…

Q: Women athletes at UČLA have a long-term graduation rate of 96%. Over the past several years, a…

A: We have given that  Sample size n= 40 Favorable cases x = 37 Sample proportion p^=x/n…

Q: Homeless Population Per State from 2010 to 2020 Source:…

A: 1. Data VisualizationDouble Bar Chart:Prepare a double bar chart in Excel with the help of selecting…

Q: A psychologist wants to demonstrate the effectiveness of ACT therapy for the treatment of…

A: Correct option is: B. dependent samples t-test

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.