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 normalty distributed papulations Donot 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?Recent79 90 88 78 58 101 62 88 69 89 83 83 55 81 75 101 62Past90 88 93 94 63 85 86 92 88 91 91 91Let u, be the recent times and let u, be the past times. What are the null and alternative hypotheses?O B. Ho 4 <2O A. Ho Hi #H2Hii H1 =H2O D. Ho 4= H2O C. Ho Hi = H2Hi Hy>HzCalculate the test statistic.(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.sufficient evidence that the mean time interval has changed.the significance level. ThereHo because the P-value isIs 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 0.01 but is not rejected when the significance level is 0 10.B. 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 001O C. No, the conclusion is not affected by the significance level because Ho is not rejected regardless of whether a significance level of 0 10 or 0.01 is used.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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Answered: Listed below are time intervals (min)…

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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Suppose x has a normal distribution with mean ? = 26 and standard deviation ? = 7.Describe the distribution of x values for sample size n = 4. (Round ?x to two decimal places.) ?x = ?x = Describe the distribution of x values for sample size n = 16. (Round ?x to two decimal places.) ?x = ?x = Describe the distribution of x values for sample size n = 100. (Round ?x to two decimal places.) ?x = ?x = How do the x distributions compare for the various samples sizes? The standard deviations are the same, but the means are decreasing with increasing sample size.The standard deviations are the same, but the means are increasing with increasing sample size. The means are the same, but the standard deviations are decreasing with increasing sample size.The means are the same, but the standard deviations are increasing with increasing sample size.The means and standard deviations are the same regardless of sample size.
Question 7 of 16 Suppose IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. Use the Empirical Rule to answer the following. a. What percentage of IQ scores are between 85 and 130? Answer If needed, round your answers to 1 decimal place b. What percentage of IQ scores are over 115? Answer = If needed, round your answers to 1 decimal place c. 99.7% of IQ scores are between E and Write the lower number in the first space and the higher number in the second space
Suppose x has a normal distribution with mean ? = 53 and standard deviation ? = 7.Describe the distribution of x values for sample size n = 4. (Round ?x to two decimal places.) ?x = ?x = Describe the distribution of x values for sample size n = 16. (Round ?x to two decimal places.) ?x = ?x = Describe the distribution of x values for sample size n = 100. (Round ?x to two decimal places.) ?x = ?x =
Ii. 9 & 10
Answer number 3 to 5 pls. I don't want to waste my money here
Please answer items D to H only. I really need help
Step 1 of 3. State the null and alternative hypotheses for the test. Step 2 of 3. Compute the value of the test statistic. Round your answer to three decimal places Step 3 of 3. Draw a conclusion and interpret the decision.
Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 4.6 parts/million (ppm). A researcher believes that the current ozone level is at an excess level. The mean of 14 samples is 4.9 ppm with a variance of 1.2 Does the data support the claim at the 0.01 level? Assume the population distribution is approximately normal. Step 2 of 5 : Find the value of the test statistic. Round your answer to three decimal places.
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Question 7 > You wish to test the following claim (Ha) at a significance level of a = 0.05. H.: 41 Ha: µ1 7 42 You believe both populations are normally distributed, but you do not know the standard deviations for either. However, you have reason to believe that the variances of the two populations are equal. You obtain a sample of size nį = 14 with a mean of M1 first population. You obtain a sample of size n2 of SD2 = 7.4 from the second population. = 67.8 and a standard deviation of SD1 19 with a mean of M2 15.5 from the 61.7 and a standard deviation In the answer box below insert 2.0395 as the critical value for this test. (Report answer accurate to three decimal places.) critical value What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = %3D The test statistic is... O in the critical region O not in the critical region
A Moving to another question will save this response. Question 1 Consider a sample with a mean of 30 and a standard deviation of 2.5. Use Chebyshev's theorem to determine the percentage of the data within the ranges from 23 to 37. O a. 61% O b. 75% O c. 87% Od. 83%

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