Mathematics, 15.01.2020 02:31 superstarsara5ouh83x
(need answers asap) a news reporter wants to estimate the percentage of registered voters who will vote for a particular candidate in an upcoming election.
which statement describes a method that will him accurately estimate this percentage?
he could contact every resident in the town, ask whether the resident will vote for the particular candidate, and then calculate the percentage of residents who say they will vote for the particular candidate.
he could ask his readers to respond to a survey that asks which candidate the reader will vote for and then calculate the percentage of people who say that they will vote for the particular candidate.
he could take a random sample of registered voters, and then calculate the percentage of the sample who will vote for the particular candidate.
he could ask employees at the newspaper which candidate each will vote for, and then calculate the percentage who will vote for the particular candidate.
Answers: 1
Mathematics, 22.06.2019 02:30, Leii691
According to a research study, parents with young children slept 6.4 hours each night last year, on average. a random sample of 18 parents with young children was surveyed and the mean amount of time per night each parent slept was 6.8. this data has a sample standard deviation of 0.9. (assume that the scores are normally distributed.) researchers conduct a one-mean hypothesis at the 5% significance level, to test if the mean amount of time parents with young children sleep per night is greater than the mean amount of time last year. the null and alternative hypotheses are h0: μ=6.4 and ha: μ> 6.4, which is a right-tailed test. the test statistic is determined to be t0=1.89 using the partial t-table below, determine the critical value(s). if there is only one critical value, leave the second answer box blank.
Answers: 3
(need answers asap) a news reporter wants to estimate the percentage of registered voters who will v...
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