Write a short note on Tukey’s HSD test.
Q: Describe about the type I error or a false alarm.
A: While testing,we need to consider two hypothesis,a null hypothesis(H0),which is taken as the…
Q: ignificance is referred to as "independent of observations". Explain this assumption.
A: The assumption of independence is used for T tests, in ANOVA tests, and in several other statistical…
Q: The blue catfish (Ictalurus Furcatus) is the largest species of North Amercian catfish. The current…
A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…
Q: Travis County has a population of 1.274 million. The total number of covid 19 cases in travis County…
A: Given that there are 1.274 million, total number of covid 19 cases in travis county is 26,633.…
Q: A recent study revealed that the average weight of babies born in the United States is normally…
A:
Q: A recent study revealed that the average weight of babies born in the United States is normally…
A: Answer Reject H0
Q: Dogsled drivers, known as mushers, use several different breeds of dogs to pull their sleds. One…
A:
Q: Battery life is an important issue for many smartphone owners. Public health studies have examined…
A: From the provided information, The data values are as follow: Primary use: Talking 35.8 22.2 24.0…
Q: There is an analysis, which shows a very high correlation between cumulative rainfall in the Amazon…
A: Apparently we might think Amazon forest rainfall has an effect on Nasdaq stock market index. But…
Q: A recent study revealed that the average weight of babies born in the United States is normally…
A: The samples size is 87.
Q: A researcher at a college hears students complain that they don’t have enough time to in their week…
A: The provided information are:
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: Database A contains 40 data items and it's made up with an equal number of values of 0 and 100 and…
A:
Q: Approximately 1.55 percent of people ages 40-50 have breast cancer.* Suppose a person has a 86…
A: Probability is a chance of occurrence of any event.
Q: A Fair Isaac Corporation (FICO) score is used by credit agencies such as banks to determine whether…
A:
Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the…
A: The hypothesis is the statement of parameter, there are two types of hypothesis. They are null and…
Q: a. Formulate hypotheses about the two population variances that can be used to determine whether the…
A: a) Null and Alternative Hypotheses The following null and alternative hypotheses need to be tested:…
Q: A software company is interested in improving customer satisfaction rate from the 65% currently…
A: Given,population proportion(P)=0.65sample size(n)=207no.of customers who were satisfied(x)=145
Q: A Fair Isaac Corporation (FICO) score is used by credit agencies such as banks to determine whether…
A: The claim is that the mean FICO score of high income earners in California is at most 592, the mean…
Q: What is the best point estimate for average number of credit hours per semester for all students at…
A: Given : At the local college a study found that students earn an average of 14.3 credit hours per…
Q: One personality test available on the World Wide Web has a subsection designed to assess the…
A: We have given that Mean(µ) = 140 Sample mean (x̅) = 134 Standard deviations (s) = 28
Q: A researcher at a college hears students complain that they don’t have enough time to in their week…
A: Given that, He knows that three years ago, the mean number of hours per week students spent of…
Q: Please answer the question on the photo.
A: Here, random sample of students of schedule of bedtime.
Q: One of the categories of special education are children who are diagnosed with specific learning…
A: Given Information : One of the categories of special education are children who are diagnosed with…
Q: Assume all the conditions of this test have been met. Using the p-value from the output, what can we…
A: Consider that µA, µB, µC, and µD, are mean life of four different battery brands, respectively. The…
Q: Give an example to explain how multiple comparisons leads to an escalation of type 1 error.
A: Type I error: Type-I error is rejecting the null hypothesis H0, when the null hypothesis H0 is…
Q: Describe one-tailed p-values.
A: The choice of a specific value of the level of significance is completely subjective and hence the…
Q: A researcher wants to know whether taking a caffeine pill an hour before swimming affects the timeit…
A: It is needed to find the explanatory and response variable.
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: more than 50% Australians would download COVIDSafe app? Check the condition and test at 5% level.
A:
Q: what are IQR?
A:
Q: (a) State the null hypothesis H and the alternative hypothesis H₁. Ho :O H₁:0 (b) Determine the type…
A: Followings are the Explanation of the question Use the two sample independent test Given that,…
Q: A study of seat belt users and nonusers yielded the randomly selected sample data summarized in the…
A: From the given information, Formula for Expected frequency:
Q: 2. Five hundred sixty-nine people were surveyed on their favorite source of caffeine. The results…
A: Chi-square is given by, Chi-square= summation (Oi-Ei)2/Ei Where Oi's are observed values and Ei's…
Q: Assuming there are 150 students in our statistics class, 20 of you have received 4 hours of study…
A: Given Data: Sample mean=75 Population mean=72 Population standard deviation=6 n=20 For one sample…
Q: 3. A researcher suspects that the actual prevalence of generalızed anxiety amony adolescents is…
A: Denote p as the true proportion of the prevalence of generalized anxiety among children and…
Q: A researcher at a college hears students complain that they don’t have enough time to in their week…
A: Introduction: The effect size, as the proportion of sample variance, r2, for a one-sample t-test is…
Q: hospital in New York commonly conducts stress tests to study the heart muscle after a person has a…
A: Given that Sample size =50 Sample mean =32 Sample standard deviation =9 Population mean =68 Level…
Write a short note on Tukey’s HSD test.

Step by step
Solved in 2 steps

- A recent study revealed that the average weight of babies born in the United States is normally distributed with a mean of 7.5 pounds. This number is lower than recent years and so researchers are interested in determining what factors are associated with lower birth weights. One researcher decides to look at the age of the mother to determine if younger mothers have babies that are significantly heavier or lighter than average. To study this the researcher collects data from 87 babies who were born to mothers between the ages of 16 and 18. Only one baby was measured per mother. Twins and other multiple births were excluded. The average weight for these babies was 7.3 pounds with a standard deviation of .6 pounds Select the two-tailed null hypothesis for this statistical analysis. The babies of young mothers will not be significantly different than the weight of babies in the general population. The babies of young mothers will be significantly lighter than the…Please add a lot of details, im very confused.please use calculator method use a ti 83 or 84
- You're a healthcare analytics professional working for Pawhuska, Oklahoma's fourth-largest hospital. You're examining the amount of waiting time that patients classified as ES5 (those with ailments that are not life-threatening) spend in the emergency room. You'll make some changes to emergency room procedures if you find that the mean ES5 waiting time is longer than 18 minutes, the industry standard. Based on a sample of 22 ES5 patients, you found an average and standard deviation of waiting times to be 19.2 minutes and 2.4 minutes, respectively. Draw basic conclusions with the CRITICAL VALUE APPROACH with 99% confidence. Р What is the probability that you conclude that no changes in the emergency room are needed when the actual waiting time for ES5 patients is 20 minutes?please give some detailed solution and please do not copy other's work,thanks!! According to a union agreement, the mean income for all senior-level assembly-line workers in a large company is $500 per week. A representative of a women's group decides to analyse whether the mean income for female employees matches this norm. For a random sample of 50 female employees, the mean is $410 and the SD is $90. Test with a-0.05, whether the mean income of female employees differs from $500 per week. What is the probability of the Type II error in this case?Every year, all incoming high school freshmen in a large school district take a math placement test. For this year’s test, the district has prepared two possible versions: Version 1 that covers more material than last year’s test and Version 2 test that is similar to last year’s test. The district suspects that the mean score for Version 1 will be less than the mean score for Version 2. To examine this, over the summer the district randomly selects 90 incoming freshmen to come to its offices to take Version 1, and it randomly selects 75 incoming freshmen to come take Version 2. The 90 incoming freshmen taking Version 1 score a mean of 113.0 points with a standard deviation of 16.8 . The 75 incoming freshmen taking Version 2 score a mean of 117.0 points with a standard deviation of 18.5 . Assume that the population standard deviations of the test scores from the two versions can be estimated to be the sample standard deviations, since the samples that are…
- A consumer group plans a comparative study of the mean life of four different brands of batteries. Ten batteries of each brand will be randomly selected and the time until the energy level falls below a pre-specified level is measured.Explain about lower tail test.Dogsled drivers, known as mushers, use several different breeds of dogs to pull their sleds. One proponent of Siberian Huskies believes that sleds pulled by Siberian Huskies are faster than sleds pulled by other breeds. He times 4040 teams of Siberian Huskies on a particular short course, and they have a mean time of 7.77.7 minutes. The mean time on the same course for 4747 teams of other breeds of sled dogs is 6.26.2 minutes. Assume that the times on this course have a population standard deviation of 1.51.5 minutes for teams of Siberian Huskies and 1.61.6 minutes for teams of other breeds of sled dogs. Let Population 1 be sleds pulled by Siberian Huskies and let Population 2 be sleds pulled by other breeds. Step 1 of 2 : Construct a 95%95% confidence interval for the true difference between the mean times on this course for teams of Siberian Huskies and teams of other breeds of sled dogs. Round the endpoints of the interval to one decimal place, if necessary.
- The results of a common standardized test used in psychology research is designed so that the population mean is 105 and the standard devlation is 30. A subject earns a score of 108. What is the Z-score for this raw score? Z-Score =A recent study revealed that the average weight of babies born in the United States is normally distributed with a mean of 7.5 pounds. This number is lower than recent years and so researchers are interested in determining what factors are associated with lower birth weights. One researcher decides to look at the age of the mother to determine if younger mothers have babies that are significantly heavier or lighter than average. To study this the researcher collects data from 87 babies who were born to mothers between the ages of 16 and 18. Only one baby was measured per mother. Twins and other multiple births were excluded. The average weight for these babies was 7.3 pounds with a standard deviation of .6 pounds. Was the average weight of babies of young mothers significantly different than babies in the general population? No, the difference was not significant Yes, they were lighter. Yes, they were heavierCreate an example of 2 data sets with the same range and the same number of values that have different standard deviations











