For the following claim, find the null and alternative hypotheses, test statistic, critical value, and draw a conclusion. Assume that a simple random sample has been selected from a normally distributed population. Answer parts a-d. Claim: The mean IQ score of statistics professors is less than 116. Sample data: n= 17, x= 113, s = 6. The significance level is a =0.05. Click the icon to view a table of critical t-values.
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- A data set includes data from student evaluations of courses. The summary statistics are n=85, x=4.16 , s =0.67. Use a significance level 0.05 to test the claim that the population of student course evaluations has a mean equal to 4.25 . Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. Thanks. I wold like to know also how to enter x with the bar over. Is it the same as X. JanieThe display provided from technology available below results from using data for a smartphone carrier's data speeds at airports to test the claim that they are from a population having a mean less than 6.00 Mbps. Conduct the hypothesis test using these results. Use a 0.05 significance level. Identify the null and alternative hypotheses, Identify the test statistic, Identify the P-value, State the final conclusion that addresses the original claim.Use the data set provided in the main page of the experience for this application.1. Complete the full hypothesis testing procedure to determine if students at TCC watch less television than Americans in general. Use the fact that Americans watch 5.5 hours of television per day with a standard deviation of 1 hour per day. Include the following in your report:a) Hypotheses using correct notation b) type of test (left, right, two-tailed) , distribution used (normal or t), reasons whyc) level of significance, choose one based on how serious the study isd) Sample statistics (sample size and sample mean or sample proportion)e) P-Value (Round answer to four decimal places)f) Interpretation of P-value (Use Definition of P-Value but be specific to this context)g) Drawing or graph of P-value.h) Decisioni) Conclusion in complete sentences.
- Gaynor Advertising conducted a survey to determine individual’s main source of news as well astheir educational level. 2500 individuals were surveyed and the results are given in the attached table. a. State both the null and alternative hypotheses. b. Provide the decision rule for making this decision. Use an alpha level of 5%. c. Show all of the work necessary to calculate the appropriate statistic. d. What conclusion are you allowed to draw? e. Would your conclusion change at the 10% level of significance? f. Confirm test results in part (c) using JASPPerform the following hypothesis test using the critical value (traditional) method. Be sure to state the null and alternative hypotheses, identify the critical value, calculate the test statistic, compare the test statistic to the critical value, and state the conclusion. Use English if you cannot write the mathematical symbols. The mean lasting time of 2 competing floor waxes is to be compared. Twenty floors are randomly assigned to test each wax. Wax#1 had a mean time of 3 months, while Wax#2's mean was 2.9 months. The population standard deviations are 0.33 and 0.36, respectively. Does the data indicate that Wax#1 lasts longer than Wax#2? Test at a 5% level of significance.A machine in a factory must be repaired if it produces more than 11% defectives among the large lot of items that it produces in a day. A random sample of 116 items from the day’s production contains 21 defectives, and the supervisor says that the machine must be repaired. Does the sample evidence support his decision? Use a test with significance level of 2.5%. Complete the following by providing the values requested and selecting the most appropriate option, where applicable.
- Use a 0.05 significance level to test the claim that the different samples come from populations with the same mean. Use the traditional method. List the null and alternative hypothesis, the critical value, the test statistic, Draw the graph and label the test statistic, critical value and rejection regions. Reject or fail to reject? State the conclusion as outlined in the template or book Your hypothesis test must take up one whole page only (8 1/2" x 11"), typed or written and must be neat. ANOVA Source of Variation SS df MS F P-value Factor 13.500 3 4.500 5.171 0.0011 Error 13.925 16 0.870 Total 27.425 19The display provided from technology available below results from using data for a smartphone carrier's data speeds at airports to test the claim that they are from a population having a mean less than 4.00 Mbps. Conduct the hypothesis test using these results. Use a 0.05 significance level. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. LOADING... Click the icon to view the display from technology. What are the null and alternative hypotheses? A. Upper H 0H0: muμequals=4.004.00 Mbps Upper H 1H1: muμnot equals≠4.004.00 Mbps B. Upper H 0H0: muμequals=4.004.00 Mbps Upper H 1H1: muμgreater than>4.004.00 Mbps C. Upper H 0H0: muμless than<4.004.00 Mbps Upper H 1H1: muμequals=4.004.00 Mbps D. Upper H 0H0: muμequals=4.004.00 Mbps Upper H 1H1: muμless than<4.004.00 MbpsAquarius health club, one of the largest and most popular cross-fit gyms in the country has been advertising a rigorous program for body conditioning. The program is considered successful if the candidate is able to do more than 5 push-ups, as compared to when he/she enrolled in the program. Using the sample data provided can you conclude whether the program is successful? (Consider the level of Significance as 5%) I need help with chosing the test and hypothesis forming only. Before After 39 44 25 25 39 39 6 13 40 44 27 34 30 34 22 29 21 30 38 46 32 37 31 35 16 24 21 28 32 39 29 39 36 44 22 26 34 40 33 35 35 42 32 41 20 26 37 38 31 32 23 24 39 45 32 39 36 37 14 21 28 36 17 24 11 15 28 37 28 35 15 21 21 26 33 40 13 17 32 35 29 37 24…