Newly purchased tires of a particular type are supposed to be filled to a pressure of 30 psi. Let u denote the true average pressure. A test is to be carried out to decide whether u differs from the target value. Determine the P-value for each of the following z test statistic values. (Round your answers to four decimal places.) IA USE SALT (а) 2.13 (b) -1.71 (c) -0.57 (d) 1.47 (e) -4.9

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You collect data on SAT scores at Stonehill. You want to compare the average score of a Stonehill student (x̅ = 1670, s = 81), to the 2013 national average, which is μ = 1497. Which statistical test would you use to see if there was a significant difference between the SAT scores of students at Stonehill and the national average on the SAT? a. one sample t test b. two sample t test c. repeated measures t test  d. ANOVA

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Answer.

T-TEST FOR INDEPENDENT MEANS 1. Two types of instruments for measuring the amount of sulfur monoxide in the atmosphere are being compared in an air pollution experiment. It is desired to determine whether the types of instruments yield measurement having the same variability. The following readings were recorded for the instrument. Sulfur Monoxide Instrument A Instrument B 0.86 0.87 0.82 0.74 0.75 0.63 0.61 0.55 0.89 0.76 0.64 0.70 0.81 0.69 0.68 0.57 0.65 0.53 Assuming the population of measurements to be approximately normally distributed, test the null hypothesis using two tailed test at 0.05 level of significance.

NEED ALL PARTS PLEASE A (continued): null or alternative and what are h0 & ha B. critical values and rejection region (rounded to three decimal places) C. Calculate d and sd D. Find standardized test statistics e. Reject or fail hypothesis

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Find the margin of error for the given values of​ c, σ​, and n.   c=0.90​, σ=3.5​, n=36   LOADING... Click the icon to view a table of common critical values.       E=enter your response here ​(Round to three decimal places as​ needed.)