Suppose that 100 tires made by a certain manufacturer lasted on average 54,500 miles with a standard deviation of 2,000 miles. Do you have enough evidence to reject the manufacturer's claim that the average life is at least 55,000 miles? Test the claim at significance level a = = 0.05. State clearly what are your null and alternative hypotheses, show your work, and state your conclusion.

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A: Given graph is

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A: Answer: From the given data, Sample size(n) = 100 mean (x¯) = 10 standard deviation(s) = 0.6

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A: P(A1⋂B)=0.20, P(A2⋂B)=0.02

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A: The data in the figure below represents the number of stars earned by 140 performers in a talent…

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A: Answer: Given sample data is: 9,6,2,6,7,2,7,1,4,8,9 Sample size(n) = 11

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A: Here Given Box and plot diagram of 2019  vehicle retail price.

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A: Hi thank  you for posting  this question,  since you have posted  multiple question we have solve…

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A: (a)  p^=0.1, n=30 (b)p^=0.1,n=100 (C)p^=0.5, n=50

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A: Sample size n =64 Favorable cases x =35 Sample proportion p^=x/n  =35/64 =0.5469

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A: Answer: From the given data, Sample size(n) = 80 mean = 8 Standard deviation(s) = 0.9

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A: From the given information     Confidence level, CL  = 0.95    Sample size, n = 3 So, degrees of…

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A: Mean(µ) = 13Standard deviations (σ) = 2X ~ N (µ, σ )= N(13,2)

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A: The icon image in IBM SPSS is given.

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A: For the given statistics, we need find which of these statistics equal to the sample variance.

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A: (a)  Population mean μ=18, standard deviations σ=6, n=38  (b) Population mean μ=563, standard…

Q: A random sample of 861 births included 435 boys. Use a 0.05 significance level to test the claim…

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A: From the provided information, Sample size (n) = 36 Sample mean (x̄) = 12.199 Sample standard…

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A: Answer: From the given data, sample size(n) = 580 p^ = 0.32 99% confidence level,

Q: Use the Student's t distribution to find tc for a 0.99 confidence level when the sample is 11.

A: Answer:- Given, Confidence level = 0.99 So, Level of significance, α = (1-0.99) = 0.01  Sample size,…

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A: X~N( μ , ?)   μ=100 , ?=15   Z-score =( x - μ )/?

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A: y = a+bx b = -0.89 a = 23.49 r2 = 0.6519 r = -0.8074

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Q: a. Identify the null and alternative hypotheses. b. identify the test statistic c. identify the…

A: Sample size n =35 Population mean =8.953

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Q: Maylin categorized her spending for this month into four categories: Rent, Food, Fun, and Other. The…

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