A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. p = 0.8 Ho: H₂: p = 0.8 What type of test is being conducted in this problem? A. Left-tailed test B. Two-tailed test C. Right-tailed test
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- Test the claim that the mean GPA of night students is significantly different than 2 at the 0.01 significance level. The null and alternative hypothesis would be: Ho:µ = 2 Ho:µ 0.5 H,:µ > 2 H:p 2 H :p + 0.5 H¸ :p 0.5 The test is: left-tailed right-tailed two-tailed Based on a sample of 75 people, the sample mean GPA was 2.03 with a standard deviation of 0.08 The test statistic is: (to 2 decimals) The p-value is: (to 2 decimals) Based on this we: OFail to reject the null hypothesis O Reject the null hypothesisTest the claim that the mean GPA of night students is significantly different than the mean GPA of day students at the 0.02 significance level. The null and alternative hypothesis would be: Ho: HN = HD Họ:µN = µD Ho:µN = HD HA:HN + HD HẠ:HN µD The test is: left-tailed right-tailed two-tailed The sample consisted of 30 night students, with a sample mean GPA of 2.68 and a standard deviation of 0.3, and 40 day students, with a sample mean GPA of 2.61 and a standard deviation of 0.2. The test statistic is: (to 2 decimals) The p-value is: (to 2 decimals)Which of the following relates to the rejection of the null hypothesis when it is actually true? 1. Type I error2. Type II error 3. Power 4. Statistical significance
- You are conducting a study to see if the accuracy rate for fingerprint identification is significantly less than 0.69. If your null and alternative hypothesis are: Ho:p > 0.69 Ha:p < 0.69 Then the test is: two tailed O right tailed left tailedTru or False? For a right-tailed test, reject the null hypothesis only if P < α. For a left-tailed test, reject the null hypothesis only if P < α. If we reject the null hypothesis at a significance level of α = .01, then we also reject the null hypothesis at a significance level of α = .05.first picture is the background information
- Consider the following hypothesis test. H0: ? = 100 Ha: ? ≠ 100 A sample of 65 is used. Identify the p-value. Use ? = 0.05. (a) x = 103 and s = 11.5 Find the p-value. (Round your answer to four decimal places.) p-value = (b)x = 95.5 and s = 11.0 Find the p-value. (Round your answer to four decimal places.) p-value = (c) x = 101 and s = 10.5Use technology to find the P-value for the hypothesis test described below. The claim is that for 12 AM body temperatures, the mean is µ< 98.6°F. The sample size is n= 5 and the test statistic is t= - 2.604. ..... P-value = (Round to three decimal places as needed.)Using the accompanying data of restaurant sales, determine if the vanance of weekday sales is the same as that of weekend sales for each of the three variables (lunch, dinner, and delivery). Click the icon to view the restaurant sales data. Is there sufficient evidence at the 0.01 level of significance to condude that the vanance of weekday sales is the same as that of weekend sales for lunch sales? Determine the null hypothesis, H. and the alternative hypothesis. H₁. Let weekend sales be population 1 and weekday sales be population 2. H₂ Hi 11 (Type integers or decimals. Do not round.) Compute the test statistic (Round to two decimal places as needed.) Survey data Date Day Lunch Sales $ Dinner Sales $ Delivery Sales $ 4-Apr Wednesday 358 789 293 11-Apr Wednesday 386 665 299 18-Apr Wednesday 426 628 289 25-Apr Wednesday 331 729 253 3-Apr Tuesday 296 848 325 10-Apr Tuesday 308 572 328 17-Apr Tuesday 297 568 358 24-Apr Tuesday 229 529 402 5-Apr Thursday 402 808 273 12-Apr Thursday 420…
- Use technology to find the P-value for the hypothesis test described below. The claim is that for 12 AM body temperatures, the mean is µ > 98.6°F. The sample size is n= 5 and the test statistic is t= 1.254. P-value = (Round to three decimal places as needed.)Use technology to find the P-value for the hypothesis test described below. The claim is that for a smartphone carrier's data speeds at airports, the mean is u = 15.00 Mbps. The sample size is n= 20 and the test statistic is t = -2.405. P-value = (Round to three decimal places as needed.)The average final exam score for the statistics course is 78%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is higher. The final exam scores for the 13 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 90, 84, 93, 77, 95, 79, 82, 70, 85, 70, 83, 100, 90 What can be concluded at the the a = 0.05 level of significance level of significance?
