Mathematics, 21.01.2020 01:31 dairysoto9171
A2010 study conducted by the health services research department of the national center for biotechnology information compared mortality rates for patients with acute myocardial infarction in hospitals in states that do not have mandated minimum nurse‑to‑patient ratios with california, which does have mandated minimum nurse‑to‑patient ratios.
suppose the researchers wanted to determine if the mortality rate was higher in those states than the established rate in california. their sampling method can be considered to be a simple random sample of a very large number of patients who were treated for acute myocardial infarction, the medical name for a heart attack.
which inference procedure listed would be appropriate?
one-sample, two-sided z ‑test for a mean
one-sample, two-sided z ‑test for a proportion
one-sample, right-sided z ‑test for a proportion
one-sample, z ‑confidence interval for a proportion
Answers: 2
Mathematics, 21.06.2019 19:40
Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.
Answers: 3
Mathematics, 22.06.2019 02:20
If you draw a card with a value of three or less from a standard deck of cards, i will pay you $43. if not, you pay me $11. (aces are considered the highest card in the deck.) step 1 of 2 : find the expected value of the proposition. round your answer to two decimal places. losses must be expressed as negative values.
Answers: 2
Mathematics, 22.06.2019 03:00
With this question, the answer with the red arrow is incorrect!
Answers: 1
Mathematics, 22.06.2019 07:00
Which is the equation in slope-intercept form for the line that passes through (3, 7) and is perpendicular to 3x-5y=8 a. y=5/3x+2 b. y=3/5x+2 c. y=-5/3x+12 d. y=-3/5x+5
Answers: 1
A2010 study conducted by the health services research department of the national center for biotechn...
Mathematics, 23.04.2020 19:00
Mathematics, 23.04.2020 19:01
Mathematics, 23.04.2020 19:01
Mathematics, 23.04.2020 19:01
Mathematics, 23.04.2020 19:01
Mathematics, 23.04.2020 19:01
Mathematics, 23.04.2020 19:01