Mathematics, 19.11.2019 04:31, bigboyethanlanp2s9lm
Aresearcher studying public opinion of proposed social security changes obtains a simple random sample of 25 adult americans and asks them whether or not they support the proposed changes. to say that the distribution of the sample proportion of adults who respond yes, is approximately normal, how many more adult americans does the researcher need to sample in the following cases? (a) 20% of all adult americans support the changes
(b) 25% of all adults americans support the changes
Answers: 1
Mathematics, 22.06.2019 00:00, berliedecius4051
Answer this question i need as soon as possible
Answers: 1
Mathematics, 22.06.2019 02:00, rubend7769
Elm street is straight. willard's house is at point h between the school at point s and the mall at point m. if sh = 3 miles and hm = 4.5 miles, what is the value of sm in miles?
Answers: 1
Mathematics, 22.06.2019 03:50, jescanarias22
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
Aresearcher studying public opinion of proposed social security changes obtains a simple random samp...
History, 11.11.2020 20:20
Mathematics, 11.11.2020 20:20
World Languages, 11.11.2020 20:20