a)
n*0.15*(1-0.15)>=10
n>=10/0.1275
n>=78.43 i.e. 78 appx.
so,78-30= 48 more adult Americans are required to be sam
b)
we know that np(1-p)>=10
n*0.2*(1-0.2)>=10
n>=10/0.16
n>=62.5 i.e. 63 appx.
so,63-30=33 more adult Americans are required to be sampled.
A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of...
A researcher 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 adult Americans support the changes (a) The...
A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 50 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) 10% of all adult Americans support the changes (b) 15% of all adult Americans support the changes...
A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 35 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) 10% of all adult Americans support the changes (b) 15% of all adult Americans support the changes...
A researcher studying public opinion of proposed Social Secunty changes obtains a simple random sample of 35 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 to sample in the following cases? (a) 10% of all adult Americans support the changes (b) 15% of all adult Americans support the changes (a)...
8.2.23 Question Help A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 50 adult Americans and asks them whether or not they support the proposed charges. 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) 10% of all adult Americans support the changes (b) 15% of all adult Americans...
4) A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 32 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) 21% of all adult Americans support the changes (b) 37% of all adult Americans support the...
3 pts A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 30 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 if 45% of all adult American support the changes? 11 pos Question 16 8 %
In a random sample of 64 audited estate tax returns, it was determined that the mean amount of additional tax owed was $3435 with standard deviation of $2559. Construct and interpret a 90% confidence interval for the mean additional amount of tax owed for estate tax returns. Click the icon to view the t-distribution table. The lower bound is $. (Round to the nearest dollar as needed.) The upper bound is $(Round to the nearest dollar as needed.) Interpret a...
could i please get help with these thanks!
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Question Help Archer studying public opinion of proposed Social Security changes obtains a simple random sample of 30 adult Americans and ask 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 (a) 10% of all adult American support...
Question 1 (1 point) Saved A random sample of 200 University of Manitoba students is asked whether their parents have a university degree. What is the population of interest for this survey? Question 1 options: all University of Manitoba students who were included in the sample all parents of University of Manitoba students who have a university degree all University of Manitoba students all parents of University of Manitoba students all University of Manitoba students whose parents have a university...