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Laed belw are tme intervat min) between enupbons of a geyser. Assume that the recent Imes are wihin 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 thaf the population standard devtoes a t Does apoar that the mean time interval has changed? s the condusion affected by whether the significance level is 0.10 or 0017 Recent TI s2 e9 78 S0 99 61 88 60 87 81 82 55 81 75 103 62 o Past 88 07 93 94 66 34 84 92 86 91 88 91 OA HAP OB. H" H OC AP: OD. H t Calulate the test statstic 1=Round to two deamal places as needed) Find the Pvalue Pvalue =(Round to three deamal places as needed) Make a conclusion about the nul hypothesis and a final conclusion that addresses the original daim. Use a significance level of 0.10 VH, because the Pvalue is V the signficance level There sufficient evidence t 1 the mean time interval has changed Is the conclusion affected by whether significance level is 0.10 or 0.017 OA Yes, the conclusion is aftected by the significance level because H, is rejected when the signficance level is 0.10 but is not rejected when the signficance level is 001 O B. No, the conclusion is not aftected by the significance level because H, is not rejected regardess of whether a signiticance level of 0 10 or 001 is used OC. Yes, the conclusion is affected by the signficance level because H, is rejected when the significance level is 0.01 but is not rejected the signficance level is 0.10 OD. No, the conclusion is not afected by the significance level because H,s rejected regardiess of whether a significance level of 0.10 or 001 is used

Laed belw are tme intervat min) between enupbons of a geyser. Assume that the recent Imes are wihin 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 thaf the population standard devtoes a t Does apoar that the mean time interval has changed? s the condusion affected by whether the significance level is 0.10 or 0017 Recent TI s2 e9 78 S0 99 61 88 60 87 81 82 55 81 75 103 62 o Past 88 07 93 94 66 34 84 92 86 91 88 91 OA HAP OB. H" H OC AP: OD. H t Calulate the test statstic 1=Round to two deamal places as needed) Find the Pvalue Pvalue =(Round to three deamal places as needed) Make a conclusion about the nul hypothesis and a final conclusion that addresses the original daim. Use a significance level of 0.10 VH, because the Pvalue is V the signficance level There sufficient evidence t 1 the mean time interval has changed Is the conclusion affected by whether significance level is 0.10 or 0.017 OA Yes, the conclusion is aftected by the significance level because H, is rejected when the signficance level is 0.10 but is not rejected when the signficance level is 001 O B. No, the conclusion is not aftected by the significance level because H, is not rejected regardess of whether a signiticance level of 0 10 or 001 is used OC. Yes, the conclusion is affected by the signficance level because H, is rejected when the significance level is 0.01 but is not rejected the signficance level is 0.10 OD. No, the conclusion is not afected by the significance level because H,s rejected regardiess of whether a significance level of 0.10 or 001 is used

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Usted 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 naual 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 77 92 89 78 56 99 61 88 69 87 81 82 55 81 75 103 62 Past 88 87 93 94 66 84 84 92 86 91 88 91 OA H PP2 H P=P2 O B. Ho H=H2 H 4> H2 OC H H=P2 H PP2 O D. H,: 4 H2 Calculate the test statistic. t = (Round to two decimal places as needed.) Find the P-value. P-value = (Round to three decimal places as needed.) Make a conclusion about the null hypothesis and a final conclusion that addresses the original claim. Use a significance level of 0.10. Ho because the P-value is the significance level. There sufficient evidence that the mean time interval has changed. Is the conclusion affected by whether the significance level is 0.10 or 0.01? O A. Yes, the conclusion is affected by the significance level because H, is rejected when the significance level is 0.10 but is not rejected when the significance level is 0.01. O B. No, the conclusion is not affected by the significance level because H, is not rejected regardless of whether a significance level of 0.10 or 0.01 is used. O C. Yes, the conclusion is affected by the significance level because H, is rejected when the significance level is 0.01 but is not rejected when the significance level is 0.10. O D. No, the conclusion is not affected by the significance level because H, is rejected regardless of whether a significance level of 0.10 or 0.01 is used.
Transcribed Image Text:Usted 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 naual 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 77 92 89 78 56 99 61 88 69 87 81 82 55 81 75 103 62 Past 88 87 93 94 66 84 84 92 86 91 88 91 OA H PP2 H P=P2 O B. Ho H=H2 H 4> H2 OC H H=P2 H PP2 O D. H,: 4 H2 Calculate the test statistic. t = (Round to two decimal places as needed.) Find the P-value. P-value = (Round to three decimal places as needed.) Make a conclusion about the null hypothesis and a final conclusion that addresses the original claim. Use a significance level of 0.10. Ho because the P-value is the significance level. There sufficient evidence that the mean time interval has changed. Is the conclusion affected by whether the significance level is 0.10 or 0.01? O A. Yes, the conclusion is affected by the significance level because H, is rejected when the significance level is 0.10 but is not rejected when the significance level is 0.01. O B. No, the conclusion is not affected by the significance level because H, is not rejected regardless of whether a significance level of 0.10 or 0.01 is used. O C. Yes, the conclusion is affected by the significance level because H, is rejected when the significance level is 0.01 but is not rejected when the significance level is 0.10. O D. No, the conclusion is not affected by the significance level because H, is rejected regardless of whether a significance level of 0.10 or 0.01 is used.
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