You are doing a study examining the effects of studying method on academic achievement. All the students in your study take a course on genetics that lasts for 10 days. One group of students studies 20 minutes a day for 10 days. The second group studies once at the end of the course but for […]
In a survey a group of men, the heights in the 20-29 age group we’re normally distributed with mean of 67.2 inches, and a a standard deviation of 2.0 inches. A study participant is randomly selected. What is the probability that a study participant has a height less than 67 inches. What is the probability […]
Birthweight of an infant has been hypothesized to be associated with smoking status of the mother during first trimester of pregnancy. This hypothesis is tested by recording birthweights (in pounds) of infants and smoking status of mother during pregnancy for all mothers who register at the prenatal clinic at a particular hospital within a 1-month […]
According to a recent newspaper report the average starting salary for recent graduates in Electrical Engineering is at least $62,450.The Placement Director at Supreme State University would like to test the accuracy of the newspaper report. Thus, he took a random sample of 20 recent graduates in Electrical Engineering and recorded the following starting salaries. […]
In a survey of 627 males ages 18 to 64, 394 say that they have gone to the Dennis in the past year. Construct 90% to 95% confidence interval’s for the population proportion. Interpret the results and compare intervals if you mean you use technology to construct the confidence intervals. 90% confidence intervals population proportion […]
In a survey a group of men, the heights in the 20-29 age group were normally distributed with mean of 67.2 inches and a standard deviation of 2.0 inches. A study participant is randomly selected. What is the probability that a study participant has a height less than 67 inches? Probability the participant has a […]
The mean height of women in a country (ages 20−29) is
Corn plants grow to a mean height of 6.44 feet with a standard deviation of 0.33 feet. A new genetically modified corn plant is being developed. A researcher grew a group of 41 genetically-modified corn plants and found that their mean height was 6.68 feet. how can I Test to determine if the genetically modified plants are taller […]
21 16 25 13 28 22 29 29 22 28 __________________________________ Difference __________________________________ (a) If you make a histogram of the difference with the information above can you use the t-distribution? Why or why not? (b) Conduct a hypothesis test to see if the distance traveled by the air-filled football is significantly less than the […]
Show that x1, x2, x3 = (1,2,0) is a KKT point of the following problem. Maximize (x1)2 + (x2)2 + (x3)2 Subject to 2×1 + x2 <= 5 x1 + x3 <= 2 x1 >= 1 x2 >= 2 x3 >= 0 (NOTE: DON’T forget to verify primal feasibility.)
