(f) Use a 1% level of significance to test the claim that < 0. (Round your answerst = -8.59critical t= -2.353XConclusionO Fail to reject the null hypothesis. There is sufficient evidence that < 0.O Fail to reject the null hypothesis. There ir inf What is the optimal time for a scuba diver to be on the bottom of the ocean? That depends on the depthof the dive. The U.S. Navy has done a lot of research on this topic. The Navy defines the "optimal time" tobe the time at each depth for the best balance between length of work period and decompression timeafter surfacing. Let x = depth of dive in meters, and let y = optimal time in hours. A random sample ofdivers gave the following data.Xy16.12.4823.32.3829.21.6838.3 51.31.030.7520.52.3822.72.20

Whether the independent variable is the good predictor or not is studied using the slope of…

Answered: (f) Use a 1% level of significance to…

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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71. A hypothesis test is conducted with H0 : µ = -30 vs. Ha: µ < -30. The hypothesis test sample finds x̅ = -30.9, s = 4, and n = 49 . Within which interval does the tail area P lie? 0.025 < P < 0.050 0.050 < P < 0.100 0.005 < P < 0.010 0.010 < P < 0.025
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The mean salary of federal government employees on the General Schedule is $59,593. The average salary of 34 state employees who do similar work is $59,410 with =σ $1500 . At the 0.10 level of significance, can it be concluded that state employees earn on average less than federal employees? Find the critical value(s). Round the answer to at least two decimal places. If there is more than one critical value, separate them with commas.
9.5 Standard error of the mean. A random sample from a certain population has I = -44.6, s = 6.02, and n = 25. It is planned to conduct a test of Ha : µ << -40. (a) What is the null hypothesis in this case? (b) Do the summary statistics give some evidence that Ha is true? (c) Compute the estimated standard error of the mean, SEM= s/Vn. (d) Would it be surprising if Ho were true? Answer "yes" or "no," using two SEMS as the threshold of surprise. 35
(d) Use a t-test to test if the relationship between years of experience and income is statistically significant at the 0.05 level of significance. State the null and alternative hypotheses. O Ho: B₁ ≥ 0 H₂: B₁< < 0 Ho: B₁ = 0 Ha: B₁ * 0 O Ho: B₁ * 0 Ha: B₁ = 0 о ново = 0 Ha: Bo # 0 Ho Bo # 0 Ha: Bo Find the value of the test statistic for the t-test. (Round your answer to three decimal places.) = = 0 Find the p-value. (Round your answer to four decimal places.) p-value What is your conclusion? O Reject Ho. We conclude that the relationship between years of experience and income is significant. O Do not reject Ho. We cannot conclude that the relationship between years of experience and income is significant. O Reject Ho. We cannot conclude that the relationship between years of experience and income is significant. O Do not reject Ho. We conclude that the relationship between years of experience and income is significant. (e) Calculate the coefficient of determination. (Round your…
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Q1:Let p equal the proportion of drivers who use a seat belt in a country that does not have a mandatory seat belt law. It was claimed that p = 0.14. An advertising campaign was conducted to increase this proportion. Two months after the campaign, y = 104 out of a random sample ofn = 590 drivers were wearing their seat belts. The null and alternative hypotheses are given by
State the H0 (null Hypothesis) and H1 (Claim, Alternative Hypothesis). Identify the claim. Determine whether the test is either left, right or two tailed tests. Show in the sketch of graph. Find the critical value Zα and label on the graph. This is the reject H0 Calculate the test statistic. Make our decision about H0. Interpret the decision. It is claimed that the mean weight of the shipping containers at the port is 1030 kg. α = 0.01, = 1033, s = 5.7 and n=17 Note: σ for population is unknown
FURC’s security officer set up the standard µ = 60 minutes and σ = 3.0minutes to complete the campus security round by a guard during the night duty. One day security officer observed that a guard hascompleted five rounds on average in 56 minutes. Set up a hypothesis and alternative hypothesis and perform the test at the 5% level.
The t statistic for a test of Ho u 15 H₁ μ<15 based on n = 10 observations has the value t = -1.61. (a) What are the degrees of freedom for this statistic?
Determine the rejection region for a hypothesis test for the population mean using the give information. Assume that the population standard deviation is unknown, the sample size is small, and the population distribution is approximately normal. Write your answer in a format exactly as in the following examples, "t <= -2.203", or "t >= 1.706", or "|t| >= 1.305". Do not forget the SPACE after t and the SPACE before the number. Also make sure to enter the digit 0 before the decimal point. ?=0.90,??=18 two-tailed test Reject H0 if

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(f) Use a 1% level of significance to test the claim that < 0. (Round your answe t = -8.59 critical t = -2.353 X Conclusion O Fail to reject the null hypothesis. There is sufficient evidence that < 0. O Fail to reject the null hynntheric Thu