Rachael L.

question 4Assume that a sample is used to estimate a population mean μ. Find the 95% confidence interval for a sample of size 68 with a mean of 19.3 and a standard deviation of 10.7. Enter your... more

Write the vector with magnitude 7 and direction 300° in rectangular form

A study was conducted on students from a particular high school over the last 8 years. The following information was found regarding standardized tests used for college admitance. Scores on the SAT... more

A fine dining restaurant claims that the group sizes of their customers follows the following distribution: 2 people3 people4 people4+ people 32% 13% 18% 37% Gustavo, a waiter at the restaurant,... more

A 90% confidence intervals for the proportion of first-year statistics students with brown hair is given to be (0.25, 0.41).(a) What is the sample proportion of students with brown hair? (Round to... more

1.      You sample 200 people that took a test-drive and find that 25% of them end up buying a car at your dealership within 1 month of the test-drive. a.      Get a 95% confidence interval for the... more

Company A rents cars for $27 per day and 9¢ per mile driven. Company B rents cars for $19 per day and 12¢ per mile driven. You want to rent a car for one day. Find the maximum number of miles you... more