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? Recent779188805810063876988828255827410362 Past908893946484849286918991 Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times arewithin the past few years, the "past" times are from around 20 years ago, and that the two samples areindependent simple random samples selected from normally distributed populations. Do not assume that thepopulation standard deviations are equal. Does it appear that the mean time interval has changed? Is theconclusion affected by whether the significance level is 0.10 or 0.01?Recent 77 91 88 80 58 100 63 87 69 88 82 82 55 82 74 103 62Past90 88 93 94 64 84 84 92 86 91 89 91Let μ, be the recent times and let μ₂ be the past times. What are the null and alternative hypotheses?OA Hồ- Hi-tH₁: Hy > H₂OC. Ho: H₁ H₂H₁: H₂=H₂Calculate the test statistic.t=Find the P-value.OB. Ho: H₁ H₂H₁: H₁ = H₂(Round to two decimal places as needed.)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 asignificance level of 0.10.OD. Ho Hì-HH₁: H₁ H₂(1).H, because the P-value is (2).(3)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 Ho is rejected when thesignificance level is 0.10 but is not rejected when the significance level is 0.01.(1)O B. Yes, the conclusion is affected by the significance level because H, is rejected when thesignificance level is 0.01 but is not rejected when the significance level is 0.10.O C.No, the conclusion is not affected by the significance level because Ho is not rejected regardless ofwhether a significance level of 0.10 or 0.01 is used.O RejectO Fail to rejectthe significance level. ThereO D.No, the conclusion is not affected by the significance level because H, is rejected regardless ofwhether a significance level of 0.10 or 0.01 is used.(2)greater thanless than or equal to(3)O isis not

The provided information is as follows:The total number of observations in recent years is .The…

Answered: Listed below are time intervals (min)…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Related questions

Question

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	77	91	88	80	58	100	63	87	69	88	82	82	55	82	74	103	62
Past	90	88	93	94	64	84	84	92	86	91	89	91

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 7 steps with 27 images

SEE SOLUTION Check out a sample Q&A here