The following details are available with regard to a test of hypothesis for the population mean: H0:μ = 60, σ = 60 x̅ = 72, test statistic = 1.20 what is the sample size?
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The following details are available with regard to a test of hypothesis for the population mean:
H0:μ = 60, σ = 60
x̅ = 72, test statistic = 1.20
what is the
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- What are the values for SS and variance for the following sample of n = 3 scores? Sample: 8, 5, 2Given below are the analysis of variance results from a Minitab display. Assume that you want to use a 0.05 significance level in testing the null hypothesis that the different samples come from populations with the same mean. Identify the p-value. Source DF SS MS F Factor 3 30 10.00 1.6 0.264 Error 50 6.25 Total 11 80 O A. 6.25 O B. 1.6 OC. 10.00 O D. 0.264 Click to select your answer. étv MacBook Air F10 F9 F7 30 888 *- F6 F3 esc F1 F2 & @ 7 4 5 2 3.What is the IQR for the following box-and-whisker data: Min = 154, LQ = 180, Med = 197.5, UQ = 211, Max = 265 O a. 26 O b. 43.5 O c. 111 O d. 31
- Need helop with this question. Thank you :)The average family size was reported as 7.2. A random sample of families in a particular school district resulted in the following family sizes: Size 4 9. 8. 4 8 9 At 1% level of significance, does the average family size different from the national average? Use traditional way of testing hypothesis. a. Mean family size of the sample: b. Sample variance: ct Test Value: d. Summarize your Interpretation: 4)An independent measures study with n = 6 in each sample produces a sample mean difference of 8 points and Sm1-m2= 2. What is the value for the T statistic? A. 1 B. 2 C. 4 D. 4/-8
- Choose the appropriate statistical test. When computing, be sure to round each answer as indicated. A dentist wonders if depression affects ratings of tooth pain. In the general population, using a scale of 1-10 with higher values indicating more pain, the average pain rating for patients with toothaches is 6.8. A sample of 30 patients that show high levels of depression have an average pain rating of 7.1 (variance 0.8). What should the dentist determine? 1. Calculate the estimated standard error. (round to 3 decimals). [st.error] 2. What is thet-obtained? (round to 3 decimals). 3. What is the t-cv? (exact value) 4. What is your conclusion? Only type "Reject" or Retain"If I'm doing hypothesis testing on the amount (percentage) of americans who have a college degree, would I use p (the population proportion) or µ (The population mean) for the hypothesis? Then what tests would follow after? T stats or Z stats?The means of the number of revolutions per minute of two competing engines are to be compared. Thirty engines are randomly assigned to be tested. Both populations have normal distributions. Table 10.4 shows the result. Do the data indicate that Engine 2 has higher RPM than Engine 1? Test at a 5% level of significance. Engine Sample Mean Number of RPM Population Standard Deviation 1 1,500 50 2 1,600 60
- answer mmultiple choiceUse technology to help you test the claim about the population mean, u, at the given level of significance, a, using the given sample statistics. Assume the population is normally distributed Claim: 1180; a=0.06: a202.19. Sample statistics x= 1208.77, n=300 Identify the null and alternative hypotheses. Choose the correct answer below. OA H 1208.77 H1208.77 OC. H₂>1208.77 H:Hs 1208.77 OE H:1208.77 H₂>1208.77 Calculate the standardized test statistic The standardized test statistic in (Round to two decimal places as needed) Determine the P-value P= (Round to three decimal places as needed.) Determine the outcome and conclusion of the test Ho. At the 6% significance level, there enough evidence to OB. Hop21180 H₂1180 OD. Hus 1180 H₂>1180 OF H₂1180 Hps 1180 the claimUse technology to help you test the claim about the population mean, µ, at the given level of significance, a, using the given sample statistics. ASsume the population is normally distributed. Claim: µ> 1300; a = 0.06; o =213.24. Sample statistics: x = 1333.41, n = 250 %3D Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: µ> 1333.41 Ha: µs 1333.41 В. Но: и> 1300 Ha: us 1300 D. Ho: µ2 1333.41 Ha: µ 1300 Ο F H0: μ5 1333.41 Ha: µ> 1333.41 Calculate the standardized test statistic, z. Use the z formula. The standardized test statistic, z is (Round to two decimal places as needed.) Determine the P-value. Hint: Keep in mind that P-value depends on the type of test. (where Area = the number from the table) Left-tailed test: P-value=Area Right-tailed test: P-value=1-Area Two-tailed test: P-value=2*Area P = (Round to three decimal places as needed.) Compare P with a and then State your conclusion. Determine the outcome and conclusion of the test. Ho. At the…