Give a 99.5% confidence interval, for μ1−μ2μ1-μ2 given the following information. n1=25, ¯x1=2.4 , s1=0.79 n2=45, ¯x2=2.9, s2=0.33 _______ ±± _______Use Technology Rounded to 2 decimal places
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Give a 99.5% confidence interval, for μ1−μ2μ1-μ2 given the following information.
n1=25, ¯x1=2.4 , s1=0.79
n2=45, ¯x2=2.9, s2=0.33
_______ ±± _______Use Technology Rounded to 2 decimal places
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- α = 0.01 for a right tailed test. Find the critical z value.10.4.3Heights (cm) and weights (kg) are measured for 100 randomly selected adult males, and range from heights of 133 to 188 cm and weights of 40 to 150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x=167.80 cm, y=81.36 kg, r=0.286, P-value=0.004, and y=−108+1.19x. Find the best predicted value of y (weight) given an adult male who is 138 cm tall. Use a 0.10 significance level.
- (856) De'arra & Ken 4 Life - Yo x K Take Test: Assignment 3 - Cha x C Listed Below Are The Top 10 Ar X oa Range Rule of Thumb Calculate x E Mean, Mediar A mcphs.blackboard.com/webapps/assessment/take/launch.jsp?course_assessment_id%3=_43603_1&course_id%3D_34586_1&new_attempt31&conten pps O Course Materials f... 24 Google Calendar -. - Men's Nike Air For.. Ximble Money Transfer -. a, Amazon.com: Onli. M Inbox (2,647) - iak.. * Question Completion Status: QUESTION 9 Questions 9-10 Listed below are amounts (in millions of dollars) collected from parking meters by a security service company and other companies during similar tir periods. Do the limited data listed here show evidence of stealing by the security service company's employees? Security Service Company: Other Companies: 1.3 1.6 1.7 1.4 1.6 1.4 1.7 1.6 1.4 1.6 1.8 1.9 1.7 1.7 1.6 1.9 1.6 1.7 1.9 1.7 Find the coefficient of variation (use 1 decimal) for each of the two samples, then compare the variation. %. The coefficient of…Heights (cm) and weights (kg) are measured for 100 randomly selected adult males, and range from heights of 139 to 194 cm and weights of 39 to 150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x= 167.63 cm, y = 81.47 kg, r=0.106, P-value = 0.294, and y = - 108 + 1.04x. Find the best predicted value of y (weight) given an adult male who is 172 cm tall. Use a 0.05 significance level. The best predicted value of y for an adult male who is 172 cm tall is kg. (Round to two decimal places as needed.)Suppose f(x) = 1/20 from 5 to 25. What is the 25th percentile of X? 10 1/20 None of the other choices is correct .25
- Heights (cm) and weights (kg) are measured for 100 randomly selected adult males, and range from heights of 138 to 194 cm and weights of 39 to 150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x=167.95 cm, y=81.57 kg, r=0.362, P-value=0.000, and y=−103+1.07x. Find the best predicted value of y (weight) given an adult male who is 180 cm tall. Use a 0.01 significance level. The best predicted value of y for an adult male who is 180 cm tall is= kg.Question 5 of 5 -/1 View Policies Show Attempt History Current Attempt in Progress Suppose that x has a beta distribution with parameters a = 2.3 and B = 1. Determine to 4 decimal places the following: a. P(X < 0.23) i b. P(0.23 < X < 0.83) i c. Mean i d. Variance eTextbook and Media Save for Later Attempts: 0 of 3 used Submit Answer Activate Go to Settin I!An engineer wants to know if producing metal bars using a new experimental treatment rather than the conventional treatment makes a difference in the tensile strength of the bars (the ability to resist tearing when pulled lengthwise). At α=0.10, answer parts (a) through (e). Assume the population variances are equal and the samples are random. If convenient, use technology to solve the problem. Treatment Tensile strengths (newtons per square millimeter) Experimental 449 354 450 360 433 388 400 Conventional 370 376 374 424 378 450 438 404 352 376 (a) Identify the claim and state H0 and Ha. The claim is "The new treatment ▼ makes a difference does not make a difference in the tensile strength of the bars." What are H0 and Ha? The null hypothesis, H0, is ▼ mu 1 equals mu 2μ1=μ2 mu 1 less than or equals mu 2μ1≤μ2 mu 1 greater than or equals mu 2μ1≥μ2 . The alternative hypothesis, Ha,…
