Homework Answers
19)
mean = (30 * 178 + 20 * 164)/(30 + 20)
= 172.4
option D) is correct
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Exam No.I (midterm) Question No. 19 . Select only one answer. /1 pts. In a sample...
Question 19 1 pts The distribution of scores on an "Evaluation of engineering data" exam was...
Question 19 1 pts The distribution of scores on an "Evaluation of engineering data" exam was strongly skewed to the right. How would the mean and the median compare for this distribution? O mean > median O mean < median mean median None of the given comparison statements is correct Not enough information to answer the question
Chose the corectt answer(s) questions (1-3) Question 1 Which of the following statements is true? (Select...
Chose the corectt answer(s) questions (1-3) Question 1 Which of the following statements is true? (Select all correct answers) If the mean of two groups remains the same, the P value will not change even if the sample size (n) of those two groups changes. The P value is the probability that the alternative hypothesis is true. In a study of comparing the amount of alcohol consumed by men and women the null hypothesis would be defined as: “There is...
Question 11 2 pts Consider the sample with the 5 observations {5, 8, 14, 17, 19)...
Question 11 2 pts Consider the sample with the 5 observations {5, 8, 14, 17, 19) for which the mean is 12.8 and the standard deviation is 6.22. If we change the sample by subtracting 1.3 from each value, what are the new mean and the new standard deviation respectively? None of the given pairs of numerical values is correct New mean = 10.2; new sd - 4.92 New mean = 10.2; new sd = 7.52 New mean = 12.8;...
This Question: 1 pt 19 of 24 16 complete This Test: 24 pts poss Men A...
This Question: 1 pt 19 of 24 16 complete This Test: 24 pts poss Men A study was done on body temperatures of men and women. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normaly distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.01 significance level for both parts Women P2 50 X 9765 F 0.84...
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joshua melville 1/10/19 11:02 AM Quiz: Quiz 6 - Chapter 8 Submit Quiz This Question: 1 pt 4 of 5 This Quiz: 5 pts possible The mean height of women in a country (ages 20-29) is 63.6 inches. A random sample of 55 women in this age group is selected. What is the probability that the mean height for the sample is greater than 64 inches? Assume 2.85. The probability that the mean height for the sample is greater than...
0/4 pts Question 19 BH3 is [ Select ] and NH3 is [ Select ] Answer...
0/4 pts Question 19 BH3 is [ Select ] and NH3 is [ Select ] Answer 1: (You left this blank) er nonpolar Answer 2: (You left this blank) er polar
Question 9 2.5 pts Consider the following hypothesis test: H: H: 25 > 25 A sample...
Question 9 2.5 pts Consider the following hypothesis test: H: H: 25 > 25 A sample of 40 provided a sample mean of 26.4. The population standard deviation is 4. What is the value of the test statistic for this test? 2.21 1.96 0.350 1.645 Question 13 2.5 pts Consider a hypothesis test to see if the average student scores in exam 2 is less than their score for exam 1. We calculate our test statistic on the z-table to...
what is the correct answer choice? Question 4 1 pts A university administrator was interested in...
what is the correct answer choice?
Question 4 1 pts A university administrator was interested in determining if there was a difference in the distance students travel to get from class from their current residence(in miles). Men and women at UF were randomly selected. The Minitab output is below. What is the best interpretation for the output? Difference = mu (F) - mu (M) T-Test of difference - 0 (vs not =): T-Value = -1.05 P-Value -0.305 DF = 21...
Test: Exam#2 Out Submit Test isti This Question: 1 pt 9 of 19 (13 complete) This...
Test: Exam#2 Out Submit Test isti This Question: 1 pt 9 of 19 (13 complete) This Test 19 pls p E Question Help Use technology to help you test the claim about the population mean, u, at the given level of normally distributed. Claim: μ > 11 70: α:0.07; σ 203 39. Sample statistics: x. 1194 38, n-250 Identify the null and alternative hypotheses. Choose the correct answer below O A. Ho:H> 1194.38 Ha Hs 119438 O B. Hous!19438 Ha...
This Question: 1 pt 11 of 13 (2 complete) This Test: 13 pts possible Question Help...
This Question: 1 pt 11 of 13 (2 complete) This Test: 13 pts possible Question Help percentage of women with heights that are within 2 atandardons t thaing Chetrysheve theoram, what co wo know sbout the deiations of the mean? Ai least of women have heights withien 2 standard deviat one of 162 cm. Round to the tearest percent as needed ) The minimum height that is within 2 stanard deviations of the mean i m The maximum height thet...
Question 19 1 pts The distribution of scores on an "Evaluation of engineering data" exam was strongly skewed to the right. How would the mean and the median compare for this distribution? O mean > median O mean < median mean median None of the given comparison statements is correct Not enough information to answer the question
Question 11 2 pts Consider the sample with the 5 observations {5, 8, 14, 17, 19) for which the mean is 12.8 and the standard deviation is 6.22. If we change the sample by subtracting 1.3 from each value, what are the new mean and the new standard deviation respectively? None of the given pairs of numerical values is correct New mean = 10.2; new sd - 4.92 New mean = 10.2; new sd = 7.52 New mean = 12.8;...
This Question: 1 pt 19 of 24 16 complete This Test: 24 pts poss Men A study was done on body temperatures of men and women. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normaly distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.01 significance level for both parts Women P2 50 X 9765 F 0.84...
joshua melville 1/10/19 11:02 AM Quiz: Quiz 6 - Chapter 8 Submit Quiz This Question: 1 pt 4 of 5 This Quiz: 5 pts possible The mean height of women in a country (ages 20-29) is 63.6 inches. A random sample of 55 women in this age group is selected. What is the probability that the mean height for the sample is greater than 64 inches? Assume 2.85. The probability that the mean height for the sample is greater than...
0/4 pts Question 19 BH3 is [ Select ] and NH3 is [ Select ] Answer 1: (You left this blank) er nonpolar Answer 2: (You left this blank) er polar
Question 9 2.5 pts Consider the following hypothesis test: H: H: 25 > 25 A sample of 40 provided a sample mean of 26.4. The population standard deviation is 4. What is the value of the test statistic for this test? 2.21 1.96 0.350 1.645 Question 13 2.5 pts Consider a hypothesis test to see if the average student scores in exam 2 is less than their score for exam 1. We calculate our test statistic on the z-table to...
what is the correct answer choice?
Question 4 1 pts A university administrator was interested in determining if there was a difference in the distance students travel to get from class from their current residence(in miles). Men and women at UF were randomly selected. The Minitab output is below. What is the best interpretation for the output? Difference = mu (F) - mu (M) T-Test of difference - 0 (vs not =): T-Value = -1.05 P-Value -0.305 DF = 21...
Test: Exam#2 Out Submit Test isti This Question: 1 pt 9 of 19 (13 complete) This Test 19 pls p E Question Help Use technology to help you test the claim about the population mean, u, at the given level of normally distributed. Claim: μ > 11 70: α:0.07; σ 203 39. Sample statistics: x. 1194 38, n-250 Identify the null and alternative hypotheses. Choose the correct answer below O A. Ho:H> 1194.38 Ha Hs 119438 O B. Hous!19438 Ha...
This Question: 1 pt 11 of 13 (2 complete) This Test: 13 pts possible Question Help percentage of women with heights that are within 2 atandardons t thaing Chetrysheve theoram, what co wo know sbout the deiations of the mean? Ai least of women have heights withien 2 standard deviat one of 162 cm. Round to the tearest percent as needed ) The minimum height that is within 2 stanard deviations of the mean i m The maximum height thet...
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