The breaking strengths of cables produced by a certain manufacturer have historically had a mean of 1825 pounds and a standard deviation of 60 pounds. Thecompany believes that, due to an improvement in the manufacturing process, the mean breaking strength, μ, of the cables is now greater than 1825 pounds. Tosee if this is the case, 80 newly manufactured cables are randomly chosen and tested, and their mean breaking strength is found to be 1830 pounds. Can wesupport, at the 0.05 level of significance, the claim that the population mean breaking strength of the newly-manufactured cables is greater than 1825 pounds?Assume that the population standard deviation has not changed.Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.)(a) State the null hypothesis H and the alternative hypothesis H₁.H₂ : OH₁:0(b) Determine the type of test statistic to use.(Choose one)(c) Find the value of the test statistic. (Round to three or more decimal places.)0(d) Find the critical value. (Round to three or more decimal places.)(e) Can we support the claim that the population mean breaking strength of thenewly-manufactured cables is greater than 1825 pounds?OYes O No3μXI☐#0OXS0=0 O≤O 020Р0<00>03

given data μ > 1825n = 80x¯ = 1830σ = 60α = 0.05

(a) State the null hypothesis Ho and the alternative hypothesis ₁. Ho H₁:0 (b) Determine the type of test statistic to use. (Choose one) ▼ (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the critical value. (Round to three or more decimal places.) (e) Can we support the claim that the population mean breaking strength of the newly-manufactured cables is greater than 1825 pounds? OYes ONO 3. Ix S 0° Do 0=0 OSO X 3 O S

(a) State the null hypothesis Ho and the alternative hypothesis ₁. Ho H₁:0 (b) Determine the type of test statistic to use. (Choose one) ▼ (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the critical value. (Round to three or more decimal places.) (e) Can we support the claim that the population mean breaking strength of the newly-manufactured cables is greater than 1825 pounds? OYes ONO 3. Ix S 0° Do 0=0 OSO X 3 O S

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 26PFA

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