An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans have brown eyes. A random sample of n=55 C of I students found 11 with brown eyes.
Give the numerical value of the statistic p^(P HAT)=
An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of...
An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans have brown eyes. A random sample of n=82 n=82 C of I students found 30 with brown eyes. We test H 0 :p=.45 H0:p=.45 H a :p≠.45 Ha:p≠.45 (a) What is the z z -statistic for this test? (b) What is the P-value of the test? please show what functions and steps you take , thank you
= = 84 C of 1 (1 point) An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans have brown eyes. A random sample of n students found 31 with brown eyes. We test Ho : p= .45 H:p.45 (a) What is the z-statistic for this test? (b) What is the P-value of the test?
Hypothesis Testing- Problem (3): Problem (3): An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans have brown eyes. A random sample of n - 82 UNG students found 30 with brown eyes. Suppose p is the true proportion of those who have brown eyes. Does this sample provide evidence at the 5 percent level that the proportion of brown eyes is different than the 45% proportion stated in 1993? Preparation Step:...
(20 points) An article published in the Washington Post claims that 45 percent of all Americans have brown eyes. A random sample of n = 76 college students students found 28 who had brown eyes. Consider testing Ho: p= .45 H,:p #.45 (a) The test statistic is z = (b) P-value =
An article published in the Washington Post claims that 45 percent of all Americans have brown eyes. A random sample of ?=76n=76 college students students found 28 who had brown eyes. Consider testing: ?0:?=.45 ??:?≠.45 a) the test statistic is z = ? b)P-value = ?
ne Sample Hypothesis Tests: Problem 7 Previous Problem List Next (1 point) An article in the Washington Post stated that nearty 45 percent of all Americans take a daily medication. A random sample of n -82 people in Georgia found 30 who take a daily medication. Use this information to test the hypotheses Ho : p = .45 where p represents the population proportion of Georgians who take a daily medication. (a) What is the value of the sample proportion...
(1 pt) A random sample of n = 80 students found 40 with brown eyes. Give the numerical value of the statistic , the sample proportion who have brown eyes
Previous Problem Problem List Next Problem (1 point) In 2012, the percentage of cell phone owners who used their cell phone to send or receive text messages was 80 %. A polling firm contacted a simple random sample of 1300 people chosen from the population of cell phone owners. If p is the proportion of cell phone owners the mean for p who used their phone to text, then what was 0.011 Submit Answers Preview My Answers You have attempted...
On Jul 17 2018, a UVAToday article headline stated that “Only Half of Americans Believe Elections are Fair and Open”. The following statement can be found in the article: “In the Ipsos poll, which surveyed more than 1,000 American adults on July 5 and 6, 51 percent of the respondents agreed with the statement that American elections are fair and open.” The poll was based on a sample of 1,006 adults. For this question, refer only to the information provided...
A university administrator writes a report in which he states that at 45% of all students have driven while under the influence of drugs or alcohol. Many others think the correct percent is less than 45%. To resolve the issue, a random sample of 400 students is obtained and it is found that 156 or 39% admit that they have driven under the influence of drugs or alcohol. Here are some results: x N Sample p Z-value p-value 156 400 0.39 -2.41...