Mathematics, 13.06.2020 18:57 raven82914
Two random samples were taken to determine how often people in a community listen to the local radio station
the first sample survey 15 people as they exited the bank on Main Street the first simple found that the mean number of the hours they listed the radio each month was 20
second sample surveyed every six person day exited the only local Griffin until a hundred people were surveyed the second sample sounds. The mean number of hours but it was good to the radio was each month was 12
which statements are true check all that apply
second sample is Random
the second sample is likely to be more representative of the population
the first sample is unlikely to be more representative of the population
the second sample will give a better representation because it's larger
the first sample will give a better representation because it's smaller
Answers: 3
Mathematics, 22.06.2019 01:30
Someone me! will award brainliest if u explain and answer!
Answers: 3
Mathematics, 22.06.2019 03:00
Ashley recently opened a store that sells only natural ingredients. she wants to advertise her products by distributing bags of samples in her neighborhood. it takes one person 22 minutes to prepare one bag. how many hours will it take to prepare 900900 bags of samples if ashley and 55 of her friends do the work?
Answers: 1
Mathematics, 22.06.2019 03:50
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.
Answers: 3
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