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14.S Restaurants-Part 1: You believe that monthly revenues for independent restaurants in NYC average $95,000. Using...
please help! see all pics! 5. (1 pts) You are conducting a study to see if...
please help! see all pics!
5. (1 pts) You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly less than 0.59. Thus you are performing a test statistic z -1.835. Find the p-value accurate to 4 decimal places. Label the standard normal curve and shade the appropriate area. -tailed test. Your sample data produce the p-value= 6. (6 pts) Test the claim that the proportion of people...
37. Use the following information for questions 37-38: Suppose you conduct a hypothesis test to determine...
37. Use the following information for questions 37-38: Suppose you conduct a hypothesis test to determine whether or not the average age difference between married couples is less than 5 years. You conduct this test at the 0.10 significance level and come to the conclusion that 0.01 < p-value < 0.02. What is the correct decision? a. Fail to Reject the Null Hypothesis b. Reject the Null Hypothesis c. Accept the Null Hypothesis d. Accept the Alternative Hypothesis
The time to complete the Advanced Placement (AP) Statistics Exam in previous years is normally distributed...
The time to complete the Advanced Placement (AP) Statistics Exam in previous years is normally distributed with an average time of 2.5 hours. Because of school closures due to COVID-19, the College Board offered an at- home test for the 2020 AP Statistics Exam. A teacher feels that students, on average, will have a different completion time for the at-home exam. They take a random sample of 25 students that took the exam and their mean time was 2.68 hours...
b Statisti 1 pl Help region, and (d) decide whether you should reject or fail to...
b Statisti 1 pl Help region, and (d) decide whether you should reject or fail to reject the null hypothesis. The samples are random and independent Claim μι < μ2, α:001. Sample statistics: x,-1220, n1-45, x2-1200, and n2 85 Population statistics: σ 1 80 and σ2-100 (a) The test statistic for μ1-y2 is (b) The standardized test statistic for μ1-μ2 is-]. (Round to two decimal places as needed) (c) Is the standardized test statistic in the rejection region? O Yes...
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations....
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations. Sample 1 Sample 2 x¯1=20.92 x¯2=26.80 s21=2.89 s22=3.81 n1=19 n2=15 Test the null hypothesis H0:μ1=μ2against the alternative hypothesis HA:μ1<μ2. a) Calculate the test statistic for the Welch Approximate t procedure. Round your response to at least 3 decimal places. b) The Welch-Satterthwaite approximation to the degrees of freedom is given by df = 27.983055. Using this information, determine the range in which the p-value...
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations....
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations. Sample 1 Sample 2 x¯1=20.08 x¯2=24.51 s21=2.05 s22=3.20 n1=19 n2=16 Test the null hypothesis H0:μ1=μ2against the alternative hypothesis HA:μ1<μ2. a) Calculate the test statistic for the Welch Approximate t procedure. Round your response to at least 3 decimal places. b) The Welch-Satterthwaite approximation to the degrees of freedom is given by df = 28.610808. Using this information, determine the range in which the p-value...
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations....
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations. Sample 1 F1 = 23.65 = 2.50 p1 = 18 Sample 2 F2 = 25.62 = 3.28 p2 = 20 Test the null hypothesis Ho: P1 = r2 against the alternative hypothesis HA : H1 CH2 a) Calculate the test statistic for the Welch Approximate procedure. Round your response to at least 3 decimal places. Number b) The Welch-Satterthwaite approximation to the degrees of...
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations....
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations. Sample 1 F1 = 22.49 11 = 2.54 P1 = 15 Sample 2 F2 = 27.31 3 = 3.08 P2 = 18 Test the null hypothesis HO : H1 = 2 against the alternative hypothesis HA: MI <H2 a) To save you on calculations, I will tell you that the standard error of the difference in sample means (SE(X_1 bar - X_2 bar)) is...
The average amount of time it takes for couples to further communicate with each other after...
The average amount of time it takes for couples to further communicate with each other after their first date has ended is 2.5 days with a standard deviation of 1.9 days. Is this average different for blind dates? A researcher interviewed 34 couples who had recently been on blind dates and found that they averaged 3.1 days to communicate with each other after the date was over. What can be concluded at the 5% level of significance? ho= ha= test...
QUESTION 5 Summary statistics are given for independent simple random samples from two populations. Use the...
QUESTION 5 Summary statistics are given for independent simple random samples from two populations. Use the nonpooled t-test to conduct the required hypothesis test. *1 = 75.3,5 1 - 4.5, n1 = 11, * 2 - 65.5, 5 2 - 5.1, n 2 = 9 Perform a two-tailed hypothesis test using a significance level of -0.01. Test statistic: t = 4.506 Critical values = +2.921 Reject Ho Test statistic: t 2.646 Critical values - +2.921 Do not reject Ho Test...
please help! see all pics!
5. (1 pts) You are conducting a study to see if the probability of a true negative on a test for a certain cancer is significantly less than 0.59. Thus you are performing a test statistic z -1.835. Find the p-value accurate to 4 decimal places. Label the standard normal curve and shade the appropriate area. -tailed test. Your sample data produce the p-value= 6. (6 pts) Test the claim that the proportion of people...
The time to complete the Advanced Placement (AP) Statistics Exam in previous years is normally distributed with an average time of 2.5 hours. Because of school closures due to COVID-19, the College Board offered an at- home test for the 2020 AP Statistics Exam. A teacher feels that students, on average, will have a different completion time for the at-home exam. They take a random sample of 25 students that took the exam and their mean time was 2.68 hours...
b Statisti 1 pl Help region, and (d) decide whether you should reject or fail to reject the null hypothesis. The samples are random and independent Claim μι < μ2, α:001. Sample statistics: x,-1220, n1-45, x2-1200, and n2 85 Population statistics: σ 1 80 and σ2-100 (a) The test statistic for μ1-y2 is (b) The standardized test statistic for μ1-μ2 is-]. (Round to two decimal places as needed) (c) Is the standardized test statistic in the rejection region? O Yes...
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations. Sample 1 F1 = 23.65 = 2.50 p1 = 18 Sample 2 F2 = 25.62 = 3.28 p2 = 20 Test the null hypothesis Ho: P1 = r2 against the alternative hypothesis HA : H1 CH2 a) Calculate the test statistic for the Welch Approximate procedure. Round your response to at least 3 decimal places. Number b) The Welch-Satterthwaite approximation to the degrees of...
Consider the following summary statistics, calculated from two independent random samples taken from normally distributed populations. Sample 1 F1 = 22.49 11 = 2.54 P1 = 15 Sample 2 F2 = 27.31 3 = 3.08 P2 = 18 Test the null hypothesis HO : H1 = 2 against the alternative hypothesis HA: MI <H2 a) To save you on calculations, I will tell you that the standard error of the difference in sample means (SE(X_1 bar - X_2 bar)) is...
QUESTION 5 Summary statistics are given for independent simple random samples from two populations. Use the nonpooled t-test to conduct the required hypothesis test. *1 = 75.3,5 1 - 4.5, n1 = 11, * 2 - 65.5, 5 2 - 5.1, n 2 = 9 Perform a two-tailed hypothesis test using a significance level of -0.01. Test statistic: t = 4.506 Critical values = +2.921 Reject Ho Test statistic: t 2.646 Critical values - +2.921 Do not reject Ho Test...
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