Question

i need with statistics

Answer 1

1. Data is available for all 50 states on the percentage of public school students who were at or above the proficient level in mathematics testing in 1996 and 2000. Explain why it is not necessary to use an inference procedure if you want to know if the mean percentage proficient for the 50 states increased from 1996 to 2000.

2. A political strategy team collected some preliminary data from voters in a certain district. Using the data, they created a confidence interval for the proportion of voters in the district for their candidate, (39.30%,53.15%). If they collected data from 344 voters altogether, compute the level of confidence they used when creating their interval. Show all work.