A hiking trail is 150 miles long. directional signs are posted along the trail every 1/3 mile. How many signs are posted along trail

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Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.

Tanner has purchased a car with a loan. his bank now deducts the amount of the monthly payment from his account on the second of every month. which financial service has tanner’s bank offered him? a. money transfer b. automated payment c. online banking d. atm withdrawal