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Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times are within the past few years, the "past" times are from around 20 years ago, and that the two samples are ndependent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Does conclusion affected by whether the significance level is 0.10 or 0.01? appear that the mean time interval has changed? Is the Recent 78 91 89 78 58 101 62 87 69 87 83 83 56 82 75 101 62 Past 89 89 93 94 65 84 85 92 86 91 91 91 Let u, be the recent times and let H, be the past times. What are the null and alternative hypotheses? O A. Ho: H# H2 H,: H1 = H2 Họ: H1 =H2 OC. Họ: H1 = H2 H;: H> H2 O D. Ho: H

Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times are within the past few years, the "past" times are from around 20 years ago, and that the two samples are ndependent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Does conclusion affected by whether the significance level is 0.10 or 0.01? appear that the mean time interval has changed? Is the Recent 78 91 89 78 58 101 62 87 69 87 83 83 56 82 75 101 62 Past 89 89 93 94 65 84 85 92 86 91 91 91 Let u, be the recent times and let H, be the past times. What are the null and alternative hypotheses? O A. Ho: H# H2 H,: H1 = H2 Họ: H1 =H2 OC. Họ: H1 = H2 H;: H> H2 O D. Ho: H

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times are within the past few years, the "past" times are from around 20 years ago, and that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Does it appear that the mean time interval has changed? Is the conclusion affected by whether the significance level is 0.10 or 0.01? Recent 78 91 89 78 58 101 62 87 69 87 83 83 56 82 75 101 62 Past 89 89 93 94 65 84 85 92 86 91 91 91 Let be the recent times and let u, be the past times. What are the null and alternative hypotheses? B. Ho: H1= H2 A. Ho: H1#H2 H1: H1 = H2 O C. Ho: H1 = H2 H;: H1 > H2 Ho: H1 <Hz H;: H1 = H2 Calculate the test statistic. | (Round to two decimal places as needed.)
Transcribed Image Text:Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times are within the past few years, the "past" times are from around 20 years ago, and that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Does it appear that the mean time interval has changed? Is the conclusion affected by whether the significance level is 0.10 or 0.01? Recent 78 91 89 78 58 101 62 87 69 87 83 83 56 82 75 101 62 Past 89 89 93 94 65 84 85 92 86 91 91 91 Let be the recent times and let u, be the past times. What are the null and alternative hypotheses? B. Ho: H1= H2 A. Ho: H1#H2 H1: H1 = H2 O C. Ho: H1 = H2 H;: H1 > H2 Ho: H1 <Hz H;: H1 = H2 Calculate the test statistic. | (Round to two decimal places as needed.)
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