Gracie has 1/2 of a cantaloupe that she wants to divide. how many 1/12’s of a cantaloupe are there in 1/2 of a cantaloupe?

Someone me! if you’re smart you can solve this!

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.

If jobs arrive every 15 seconds on average, what is the probability of waiting more than 30 seconds?