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The given data are as follows:   Sample size (n) is 32 Sample mean (x) is 13.472 Sample standard deviation (s) is 7.245 Significance level (O) is 0.1 Hypothesized mean (mu0) is 10     Part a. Claim: The taxicab ride's mean cost in New York is greater than $10.     Part b. Null hypothesis, H0 : mu = 10 Alternate hypothesis, H1 : mu > 10     Part c. Since population std. deviation is unknown, so use t-test. The test is right-tailed because H1 : mu > 10.   Test statistic, t = (x-mu0)/[s/sqrt(n)]   = (13.472-10)/[7.245/sqrt(32)] t = 2.711     Part d. Degrees of freedom (df) = n-1 = 32-1 = 31 df = 31 is near to df = 30 on t-table.   From t-table, At df = 30 and O = 0.1, Critical value, tc is 1.310   Since t (i.e., 1.711) > tc (i.e., 1.310), so reject H0.     Part e. At significance level of 10%, there is sufficient evidence to support the claim that taxicab ride's mean cost in New York is greater than $10.     Therefore, Part a. The taxicab ride's mean cost in New York is greater than $10. Part b. H0 : mu = 10 H1 : mu > 10 Part c. Test statistic is 2.711 Part d. Reject H0. Part e. At significance level of 10%, there is sufficient evidence to support the claim that taxicab ride's mean cost in New York is greater than $10. ...