El: " I) ' mathxlcom (3| @ a + 33 Intermediate Statistics and Research Methods_2_AD_M_20212022 FALL Hamad Almaalmi 5 | 09/28/2112:17 PM HW Score: 0%, 0 of 10 points 0 Points: 0 of1 E Homework: Homework2 Question1,8.1.4 The Ericsson method is one of several methods claimed to increase the likelihood of a baby girl. In a clinical trial, results could be analyzed with a formal hypothesis test with the alternative hypothesis of p > 0.5, which corresponds to the claim that the method increases the likelihood of having a gin, so that the proportion of girls is greater than 0.51 If you have an interest in establishing the success of the method, which of the following Pvalues would you prefer: 0.999, 0.5, 0.95, 005, 001, 0.001? Why? The Pvalue of W is preferred because it corresponds to the sample evidence that most strongly supports the 7 hypothesis that the method '7 eective. Animation Textbook Get More Help A Clear All E V mathxl.com C + 88 A Admission Application x Do Homework - Homework 2 Intermediate Statistics and Research Methods_2_AD_M_2021-2022 FALL Hamad Almaazmi & | 09/28/21 12:17 PM Homework: Homework 2 Question 2, 8.1.16 HW Score: 0%, 0 of 10 points O Points: 0 of 1 Save Claim: The standard deviation of pulse rates of adult males is less than 12 bom. For a random sample of 168 adult males, the pulse rates have a standard deviation of 10.8 bom. Find the value of the test statistic. The value of the test statistic is. Round to two decimal places as needed.) Help Me Solve This View an Example Get More Help - Clear All Check AnswerEl: " I) ' mathxlcom (3| @ a + 33 Intermediate Statistics and Research Methods_2_AD_M_20212022 FALL Hamad Almaazmi 6 | 09/28/2112:18 PM Question 3, 8.2.9-T > HW Score: 0%, 0 of 10 points : Homework: Homework 2 par\" on; 0 points: 0 on In a study of the accuracy of fast food drive-through orders. one restaurant had 37 orders that were not accurate among 317 orders observed. Use a 0.10 signicance level to test the claim that the rate of inaccurate orders is equal to 10%. Does the accuracy rate appear to be acceptable? Identify the null and alternative hypotheses tor this test. Choose the correct answer below. 0 A. H0: p=0.1 o 3. H0: p=0.1 Help Me Solve This View an Example Get More Help A Clear All E V mathxl.com C + 88 A Admission Application x Do Homework - Homework 2 Intermediate Statistics and Research Methods_2_AD_M_2021-2022 FALL Hamad Almaazmi | 09/28/21 12:18 PM Homework: Homework 2 Question 4, 8.2.16-T HW Score: 0%, 0 of 10 points Part 1 of 4 O Points: 0 of 1 Save Consider a drug testing company that provides a test for marijuana usage. Among 272 tested subjects, results from 28 subjects were wrong (either a false positive or a false negative). Use a 0.01 significance level to test the claim that less than 10 percent of the test results are wrong. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: P 0.1 Help Me Solve This View an Example Get More Help - Clear All Check AnswerE V mathxl.com C + 88 A Admission Application x Do Homework - Homework 2 Intermediate Statistics and Research Methods_2_AD_M_2021-2022 FALL Hamad Almaazmi | 09/28/21 12:18 PM Homework: Homework 2 Question 5, 8.3.4 HW Score: 0%, 0 of 10 points Part 1 of 2 O Points: 0 of 1 Save Twelve different video games showing violence were observed. The duration times of violence were recorded, with the times (seconds) listed below. Assume that these sample data are used with a 0.10 significance level in a test of the claim that the population mean is greater than 90 sec. If we want to construct a confidence interval to be used for testing that claim, what confidence level should be used for a confidence interval? If the confidence interval is found to be 22.8 sec mathxl.com C + 88 A Admission Application x Do Homework - Homework 2 Intermediate Statistics and Research Methods_2_AD_M_2021-2022 FALL Hamad Almaazmi | 09/28/21 12:18 PM Homework: Homework 2 Question 6, 8.3.14-T HW Score: 0%, 0 of 10 points Part 1 of 4 O Points: 0 of 1 Save A data set about speed dating includes "like" ratings of male dates made by the female dates. The summary statistics are n = 199, x = 7.55, s = 1.85. Use a 0.10 significance level to test the claim that the population mean of such ratings is less than 8.00. 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. What are the null and alternative hypotheses? O A. Ho: H = 8.00 O B. Ho: H= 8.00 H1 : H > 8.00 H1: H 8.00 H1: H # 8.00 Help Me Solve This View an Example Get More Help - Clear All Check AnswerEl: " I) ' mathxlcom (3| @ a + 33 Intermediate Statistics and Research Methods_2_AD_M_20212022 FALL Hamad Almaazmi 6 | 09/28/2112:18 PM Question 7, 8.3.26T > HW Score: 0%, 0 of 10 points : Homework: Homework 2 par\" 0\" 0 points: 0 on The accompanying data table lists the magnitudes of 50 earthquakes measured on the Richter scale. Test the claim that the population of earthquakes has a mean magnitude greater than 1.00. Use a 0.05 signicance level. Identify the null hypothesis, alternative hypothesis, test statistic, P-value. and conclusion for the test. Assume this is a simple random sample. a Click the icon to view the sample data. What are the hypotheses? O A. H0: u=1.00 in magnitude 0 3. H0: 11% 1.00 in magnitude H1: u>1.00 in magnitude H1: u=1.00 in magnitude 0 c. H0: p=1.00 in magnitude 0 D. H0: p=1.00 in magnitude H1: 11% 1.00 in magnitude H1: u mathxl.com C + 88 A Admission Application x Do Homework - Homework 2 Intermediate Statistics and Research Methods_2_AD_M_2021-2022 FALL Hamad Almaazmi | 09/28/21 12:18 PM Homework: Homework 2 Question 8, 8.4.6-T HW Score: 0%, 0 of 10 points Part 1 of 4 O Points: 0 of 1 Save A simple random sample of pulse rates of 25 women from a normally distributed population results in a standard deviation of 11.9 beats per minute. The normal range of pulse rates of adults is typically given as 60 to 100 beats per minute. If the range rule of thumb is applied to that normal range, the result is a standard deviation of 10 beats per minute. Use the sample results with a 0. 10 significance level to test the claim that pulse rates of women have a standard deviation equal to 10 beats per minute. Complete parts (a) through (d) below. a. Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: 62 10 beats per minute O B. Ho: # 10 beats per minute H1: 0 mathxl.com C + 88 A Admission Application x Do Homework - Homework 2 Intermediate Statistics and Research Methods_2_AD_M_2021-2022 FALL Hamad Almaazmi | 09/28/21 12:19 PM Homework: Homework 2 Question 9, 8.4.10-T HW Score: 0%, 0 of 10 points Part 1 of 4 O Points: 0 of 1 Save Suppose a mutual fund qualifies as having moderate risk if the standard deviation of its monthly rate of return is less than 6%. A mutual-fund rating agency randomly selects 24 months and determines the rate of return for a certain fund. The standard deviation of the rate of return is computed to be 5.14%. Is there sufficient evidence to conclude that the fund has moderate risk at the a = 0.01 level of significance? A normal probability plot indicates that the monthly rates of return are normally distributed. What are the correct hypotheses for this test? The null hypothesis is Ho: The alternative hypothesis is H: V V Help Me Solve This View an Example Get More Help - Clear All Check AnswerE V mathxl.com C + 88 A Admission Application x Do Homework - Homework 2 Intermediate Statistics and Research Methods_2_AD_M_2021-2022 FALL Hamad Almaazmi | 09/28/21 12:19 PM Homework: Homework 2 Question 10, 8.4.17-E HW Score: 0%, 0 of 10 points Part 1 of 4 O Points: 0 of 1 Save The accompanying data are drive-through service times (seconds) recorded at a fast food restaurant during dinner times. Assuming that dinner service times at the restaurant's competitor have standard deviation o = 59.9 sec, use a 0.05 significance level to test the claim that service times at the restaurant have the same variation as service times at its competitor's restaurant. Use the accompanying data to identify the null hypothesis, alternative hypothesis, test statistic, and P-value. Then state a conclusion about the null hypothesis Click on the icon to view the data. Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: