Varric has conducted a within subjects ANOVA to determine if his band of pirates have significantly improved in their swashbuckling abilities over the past four months. The results of his analysis are as follows [F(3, 58) = 5.22, p = 0.07]. Should he run a post-hoc test? A. Yes, always run a post hoc te
Q: a simulation is performed to predict the number of times a volleyball player will successfully serve…
A: The success rate given in this case is around 60 percent. This indicates that the if there are 10…
Q: In a study of the stability of IQ scores, a large group of individuals is tested once at age 18 and…
A: Given At age 18: average score = 100, SD = 10At age 35: average score = 100, SD = 10
Q: Assume the random variable x is normally distributed with mean μ = 84 and standard deviation o= 5.…
A: Given that Mean = 84 , Standard deviation = 5
Q: Is the number of children that a college student currently has independent of the type of college or…
A: The data shows the type of college or university and number of children.
Q: The weight of potato chips in a medium-size bag is stated to be 8 ounces. The amount that the…
A: Given Mean=8.1 Standard deviation=0.07
Q: D A walk-in clinic for emergency room services maintains records of the number of patients it treats…
A: Given data is No. of patients per day Frequency 20 to under 40 13 40 to under 60 21 60 to…
Q: In a study, a large sample representative of the female population in the US were asked whether they…
A: Given: In a study, a large sample representative of the female population in the US were asked…
Q: The amount of rainfall per month in Gotham City is normally distributed with a mean of 2.75 inches…
A:
Q: Find the equation of the regression line for the given data. Then construct a scatter plot of the…
A: The given data is Calories, x 150 180 120 130 70 190 Sodium, y 430 480 350 380 270 510
Q: The rabies vaccine for dogs can save your dog's life. If your dog bites another animal or is on the…
A: To find: What kind of test will you need to perform?
Q: The following data show the number of contacts that a sample of high school students had in their…
A: Given information: The data is given below, Male (x) Female (y) 124 30 41 83 29 116 27 22…
Q: Is sex associated with vision correction? She selects a random sample and records their sex and what…
A: Given The data is as follows: Contacts Glasses None Total Female 69 42 135 Male 21 63…
Q: What are the null and alternative hypotheses? OA. Ho: Median volume ≤ 16 oz H₁: Median volume = 16…
A: Given that, The data is given on 36 observations. Population median volume = 16 oz Level of…
Q: An automobile manufacturer timed a random sample of 10 mechanics in the performance of a particular…
A: Given n=sample size=10, sample standard deviations s=2.68 Level of significance ɑ=0.05
Q: It is a measure of variability equal to the difference between the third and first quartile. O Range…
A:
Q: A transportation agency would like to compare the average amount of time it takes passengers to pass…
A: Given that We have to test hypothesis for the claim that the average amount of time it takes…
Q: Assume the random variable x is normally distributed with mean μ = 80 and standard deviation o=4.…
A: Given that Mean = 80 , Standard deviation = 4
Q: You are investigating the role of physical activity on heart disease and hypothesize that physical…
A: Introduction: It is required to choose the correct option.
Q: 1) In each study, the data collected is what level of measurement? a) Letter grade (A,B,C,D,F):…
A: As per Bartleby guidelines I can't answer more than one question per post. Please post other…
Q: It is desired to know the true proportion of divers who get "the bends" (sickness from nitrogen in…
A: given data 92% ci for p p^ = 0.21n = ?E = 0.04
Q: "A large candy manufacturer produces, packages and sells packs of candy targeted to weigh 52 grams.…
A: Given: Sample size, n=20 Sample variance, s2=3.5 Confidence level=0.90 We need to determine the…
Q: Suppose you roll a special 17-sided die. What is the probability that the number rolled is a "1" OR…
A: Given that Roll a special 17-sided die Sample space = S S =…
Q: An experiment consists of first rolling a die and then tossing a coin: a. How many elements are…
A: first roll die and then toaa a coin roll die : {1,2,3,4,5,6} toss a coin : {head,tail}
Q: how do you test the hypothesis that the means are different (.05 significance) with the given data?
A: The t test are type of parametric test. It follows the assumption of normal distribution with…
Q: Use the technology display, which results from the head injury measurements from car crash dummies…
A: According to given hypothesis, The testing is based on intersection of two factors. From the given…
Q: As a group, the Dutch are among the tallest people in the world. The average Dutch man is 184 cm…
A: For the distribution of the height of Dutchmen (which is specified to be approximately normally…
Q: A fair die is rolled 624 times. If there are 100 aces (one dot), that means the observed percentage…
A: It is given that a fair die is rolled 624 times.
Q: #6 The AKC says that the average weight of Chihuahua dogs is 4.6 lbs. sample A veterinarian thinks…
A: 6) Let μ and σ denote respectively the population mean and standard deviation of the weight of…
Q: An airliner carries 350 passengers and has doors with a height of 75 in. Heights of men are normally…
A: The following solution is provided below:
Q: Over a long period of time, the production of 1000 high-quality hammers in a factory seems to have…
A: Here,Given that,Populationmean,μ0=971Population standard deviation σ=15.2Total…
Q: A class of 18 students took a test with 100 points. The standard deviation of the data is 18. Select…
A: Here we are given that, a class of 18 students took a test with 100 points. The standard deviation…
Q: RaceJA started manufacturing race cars four years ago. The company wants to know the relationship…
A:
Q: An institute conducted a clinical trial of its methods for gender selection. The results showed that…
A: From the provided information, Sample size (n) = 276 From which 153 babies born to parents using a…
Q: normally distributed with a mean of 104.9 and a standard deviation of 22.7. Find the probability…
A: Given that Adult IQ scores that are normally distributed with a mean of 104.9 and a standard…
Q: Calculate range, mean, variance, and standard deviation using the data on the number of injuries…
A: Arrange the data set in ascending order are. 0,0,0,1,1,1,2,2,3,4,4,5,8,9,11 Sample size n =15
Q: Plot (A) Plot (B) Plot (C) [Choose ] r = 1.1 r = -0.85 r = 0.53 r = -0.38 r = 0.06 r = 0.97
A:
Q: A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many…
A: From the provided information, Margin of error (E) = 3 Standard deviation (s) = 14.9 Confidence…
Q: The odds against the horse Bucksnot winning the race are 6:7. What is the probability that Bucksnot…
A: Given that The odds against the horse Bucksnot winning the race are 6:7.
Q: Adults randomly selected for a poll were asked if they "favor or oppose using federal tax dollars to…
A:
Q: Suppose that, according to a recent census, the income per capita measured in U.S. dollars was…
A: The central limit theorem states about sampling distribution. As per central limit theorem, the…
Q: A simple random sample of size n=15is drawn from a population that is normally distributed. The…
A: The sample size is n=15. The sample mean is x¯=18.5. The sample standard deviation is s=6.3. The…
Q: Consider the following information. SSTR = 6750 SSE= 8000 Ho: M1 M2 M3 M4 M5 Ha: At least one mean…
A:
Q: Consider the following data set consisting of test scores of students in a math class: 2 4 5 10 12…
A: Given Information: Consider the given data: 2 4 5 10 12 27 37 41 45 47 47 53 54 56 58 59 62 64 67…
Q: In a certain region, the mean annual salary for electricians is $58,650. Let x be a random variable…
A: According to the given information, we have Sample mean = 58650 Sample size = 50 Standard deviation…
Q: number generator outputs the sequence of digits shown below, where O represents an odd digit and E…
A: Given Significance level 0.05
Q: Find the value of the statistic including the packaging material. Round the answer to the nearest…
A: It is given that the quartiles and median are 80, 154, 205. Median is the middle most value of the…
Q: A newsgroup is interested in constructing a 95% confidence interval for the proportion of all…
A: Given that n = 511 , X = 352
Q: Read the Student's t Table that is in the instructions of this test. Two tail Alpha= 0.05 n = 18…
A: Given information- We have given the two-tailed hypothesis. Significance level, α = 0.05 Sample…
Q: Complete the following probability distribution table: X -13 11 28 45 66 80 P(X) 0.13 0.12 0.18 0.15…
A: Given that Sum of all probabilities is equal to 1 ΣP(X) = 1
Q: Construction costs in East LA is not cheap. You want to build a simple cost estimator for…
A:
Varric has conducted a within subjects ANOVA to determine if his band of pirates have significantly improved in their swashbuckling abilities over the past four months. The results of his analysis are as follows [F(3, 58) = 5.22, p = 0.07]. Should he run a post-hoc test?
- A. Yes, always run a post hoc test after conducting an ANOVA regardless of the result
- B. No, post hoc tests should only be conducted when an ANOVA yields a significant result
- C. No, post-hoc tests are not appropriate for a within subjects ANOVA
- D. Yes, post hoc tests should only be conducted when the ANOVA yields a non-significant result
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- According to the American Pet Products Manufacturers Association, cat owners spend an average of $179 annually in routine veterinary visits. A random sample of local cat owners revealed that ten randomly selected owners spent an average of $205 with s = $26. Is there a significant statistical difference at α = 0.01?The test statics isA researcher wants to test if the average performance of a new teaching method is different from the traditional teaching method in a sample of 25 students. The researcher used the Wilcoxon Signed-Ranks Test and obtained a T-value of 43. What can be concluded from the test result?A medical researcher says that less than 80% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 200 adults in that country, 76% think that healthy children should be required to be vaccinated. At α=0.05, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. Let p be the population proportion of successes, where a success is an adult in the country who thinks that healthy children should be required to be vaccinated. (a) Find the critical value(s) and identify the rejection region(s). z0=______ (b) Identify the rejection region(s). (c) Find the standardized test statistic z. z=______ (d) Decide whether to reject or fail to reject the null hypothesis and (e) interpret the decision in the context of the original claim.
- A nationwide study of undergraduate students reported that the mean number of drinks consumed per week during the spring semester is 7.96. The mean number of drinks consumed per week at USC is 7.64 (s.d.=2.55, N=412 Health services is concerned that USC students are consuming significantly more alcohol per week than the national average. Using an alpha level of .05, Is there sufficient evidence to be concerned? Be sure to select the correct critical value for the alternative hypothesis, and then use this evidence to make your conclusionA survey of 90 recently delivered women on the rolls of a county welfare department revealed that 27 had a history of intrapartum or postpartum infection. What is the critical value of z if we need to conclude that the population proportion with a history of intrapartum or postpartum infection is less than 0.25.An ANOVA produces an F-ratio with df = 1, 34. Could the data have been analyzed with a t test? What would the degrees of freedom be for a t statistic?
- A researcher hypothesizes that electrical stimulation of the lateral habenula will result in a decrease in food intake (in this case, chocolate chips) in rats. Rats undergo stereotaxic surgery and an electrode is implanted in the right lateral habenula. Following a ten day recovery period, rats (kept at 80 percent body weight) are tested for the number of chocolate chips consumed during a 10 minute period of time both with and without electrical stimulation. The testing conditions are counter balanced. Compute the appropriate t-test for the data provided below. Stimulation No Stimulation 12 8 7 7 3 4 11 14 8 6 5 7 14 12 7 5 9 5 10 8 a) What would be the null hypothesis and alternative hypothesis in this study? b) What is your tcrit? c) Is there a significant difference between the two groups? d) Interpret your answer. e) Write out your t-value in APA format. *ANSWER ALL PARTS OF THE QUESTION*A certain training device measures reaction times of users by illuminating lights, one at a time, and measuring the time it takes the user to press each light to turn it off. The makers of the device are marketing it for high-level training, saying that even among professional athletes, the proportion who can score the top ranking of "light speed" is less than 22% . As a fitness trainer who wants to buy the device to attract more customers, you want to feel comfortable that the claim made by the makers is correct. To test the claim, you decide to perform a hypothesis test. To do so, you rent the device and have a random sample of 130 professional athletes use it; 26 score a ranking of "light speed." You confirm that it is appropriate to perform a Z -test. Why is a Z -test appropriate? Find z , the value of the test statistic for your Z -test. Round your answer to three or more decimal places. =zA law enforcement organization claims that their radargun is accurate to within 0.5 miles per hour for a courthearing. An independent organization hired to test theaccuracy of the radar gun conducted 12 tests on a projectilemoving at 60 miles per hour. Given the data inthe following table, determine if the radar gun can beused in court. State the hypothesis and base your commentson an appropriate α level.
- After testing 40 participants, a significant x2obt of 13.31 was obtained. With a .05 and df 2, how would this result be reported in a publication In your own words please not copied from the internetIs there a significant difference in the competency in basic calculus of the students based from their pre-test and post-test conducted by their teacher? Use alpha at 0.05 (Data as followed)A company specializing in building robots that clean your house has found that the average amount of time kids spend cleaning their houses is about 2 hours per week with a margin error of 15 minutes. Which of the following is the correct window of time t (in minutes) we can expect the population of kids to take cleaning their rooms?