20. In a survey of 735 students at Broward College, North Campus, results revealed that 283...
In a survey of 385 students at Broward College, North Campus, results revealed that 154 students were born outside of the USA. Construct a 96% confidence interval estimate for the proportion of students who were born outside the USA. Show your calculations on a separate sheet of paper for p-hat. Q-hat, the margin of error and the construction of the confidence interval. Also, give your interpretation of the confidence interval estimate. SHOW WORK
In a survey of 735 students at North Campus, the mean GPA of foreign-born students was found to be 3.234 with a standard deviation of 0.047. Using these results, test the claim at the .05 significance level that the mean GPA of foreign-born students at North Campus is equal to 3.00. Be sure to show all the steps in the hypothesis testing procedure including the claim, the null and alternative hypotheses, the calculation of the test statistic, the p-value, your...
Using the answers from the table above, answer ALL of the questions below. For questions 1 - 13, draw a normal curve and indicate the area that you are calculating the probability of. For questions 14 – 22, use the appropriate formulas and show all of your calculations. Be sure to turn in the table above along with your answers to all of the questions below. Place your answers in a folder with your name clearly written at the top...
24. Find the minimum sample size required to estimate a population proportion with a margin of error = 0.05 a confidence level of 90%, and from a prior study, p is estimated to be .25 (a) 203 (b) 329 (c) 247 (d) 396 (e) 289 25. In a survey of 385 students at Broward College, North Campus, results revealed that 154 students were born outside of the USA. Construct a 96% confidence interval estimate for the proportion of students who...
(6 points) Cars on Campus. Statistics students at a community college wonder whether the cars belonging to students are, on average, older than the cars belonging to faculty. They select a random sample of 23 cars in the student parking lot and find the average age to be 8.5 year with a standard deviation of 5.3 year. A random sample of 23 cars in the faculty parking lot have an average age of 3.4 years with a standard deviation of...
Different lecture and tutorial rooms on campus are used by students from different Faculties. An important consideration when designing (and allocating) rooms on campus is the proportion of lefthanded seats available for left-handed students. To investigate this, UQ Property and Facilities Office sets up a booth at the Great Court to survey students on campus, asking each student whether they considered themselves left-handed or right-handed, and which Faculty they were in The results for the four most popular Faculties are...
7. A survey of first-year and second-year students at a large university asked if students were satisfied with college life. We are interested in whether there is a difference between first and second-year students with respect to this question. You performed a hypothesis test and found there was no evidence of a difference between first and second-year students in response to this question. You based th on a test using alpha -0.01. Would you have made the same decision at...
Data concerning employment status were collected from a sample of 100 World Campus students at the beginning of the Fall 2018 semester. In that sample of 100, 67 were employed full-time. We want use these data to construct a 95% confidence interval to estimate the proportion of all World Campus students who are employed full-time. Is it appropriate to use the normal approximation method? Show all your work involved with checking these assumptions. Use Minitab Express to construct a 95%...
A report about how American college students manage their finances includes data from a survey of college students. Each person in a representative sample of 793 college students was asked if they had one or more credit cards and if so, whether they paid their balance in full each month. There were 500 who paid in full each month. For this sample of 500 students, the sample mean credit card balance was reported to be $825. The sample standard deviation...
4/5 Question 4 Pregnancy testingi A college student hasn't been feeling well and visits her Select and answer. campus health center, Based on her symptoms, the doctor suspects that she is 10 points pregnant and orders a pregnancy test. The results of this test could be considered a hypothesis test with the following hypotheses: • H,: The student is not pregnant • H: The student is pregnant. Based on the hypotheses above, which of the following statements is considered a...