Looking at statistics to estimate parameters (Variability not considered)

Suppose the city interview 100, randomly selected, bicyclists that were involved in accidents that were on roadways without bike lanes and 100 bicyclists that were involved in accidents that were on roadways with bike lanes. They found that from the accidents on roadways without bike lanes 27% of the accidents resulted in a trip to the ER, of the accidents on roadways with bike lanes 13% of the accidents resulted in a trip to the ER.

1. Using only the statistics above does there appear to be much difference in the parameters of interest?

2. What do we call the change in the statistic from sample to sample?

3. Next suppose that the city took 30 random samples, each of size 100 of bicyclists that were involved in accidents that were on roadways without bike lanes. From each sample they calculated a statistic. They create a sampling distribution using the statistics. Where do we expect the sampling distribution to be centered (i.e. the mean)? Hint: You will describe the value using words not numbers.

Ivanhoe Co. provides music lessons to many clients across the city. The following information is available to be used in recording annual adjusting entries at the company’s September 30, 2021, year-end: 1. On October 1, 2020, the company had a balance of $1,990 in its supplies account. Additional supplies were purchased during the year totalling $1,790. The supplies inventory on September 30, 2021, amounts to $800. 2. On November 1, 2020, Ivanhoe purchased a one-year insurance policy for $3,120. 3. On January 2, 2021, a client paid $1,560 for six months of lessons starting April 2, 2021. 4. On February 1, 2021, Ivanhoe purchased a grand piano (to be used in music lessons) for $25,200. The piano’s estimated useful life is 12 years. 5. On May 1, 2021, Ivanhoe borrowed $29,400 from the bank and signed a 10-month, 8% note payable. Interest and principal are to be paid at maturity. 6. On August 1, 2021, Ivanhoe signed a contract with a neighbourhood school to provide weekly piano lessons to some of its students for a fee of $1,760 per month. The contract called for lessons to start on September 1, 2021. The school has not yet been sent an invoice for the month of September. 7. On August 15, 2021, the company paid $10,080 to Pinnacle Holdings to rent additional studio space for nine months starting September 1. Ivanhoe recorded the full payment as Prepaid Rent. 8. Ivanhoe’s instructors have earned salaries of $3,370 for the last week of September 2021. This amount will be paid to the instructors on the next payday: October 6, 2021. 9. Music lessons were provided to a local church group for $1,260 on September 30, 2021. Ivanhoe has not yet invoiced the group or recorded the transaction. 10. In early October 2021, Ivanhoe received an invoice for $910 from the utility company for September utilities. The amount has not yet been recorded or paid. Prepare the adjusting journal entries.

You got a new job as a university professor and want to settle down at East Lansing. You found a nice house which is selling for $500,000. You decided to pay a down payment of 10% (no closing cost), and borrow rest of the amount from the bank. This is a fixed payment loan that lasts for 10 years with annual payments. Interest rate is 6%.

Build the amortization table in Excel and show all the numbers.

researchers at a university studied children born with an infection called roseola. the children also have the causative herpesvirus inserted into their chrome osmoses. At least one parent of each child had the virus in a chromosome of a sampled hair cell. How did the children like;y become infected? and What does the transmission of the viral DNA from generation to generation reveal about the structure of DNA and its replication?

Juan: 18-year-old teenager, who started university this year so he moved to the capital. He does not know how to cook, so he eats away from home. He does not do physical activity, he only does academic activities. Weight: 135 kg Size: 1.90 mt

apply nutritional assessment, nutritional diagnosis, nutritional intervention, and nutritional vigilance

A large boat with 91.44 m in length and 42.672 m in width is carrying 1,360,777.11 kg of coal along the river with a 2.7432m draft (the height from waterline to bottom of the boat). What is the draft and weight of the boat when the boat is empty (no coal)? What is the draft and weight of the boat if the boat hits a wave and looses 10 tons of coal? Treat the boat as a rectangular cylinder. Use university introductory physics techniques.

Historically, 20% of graduates of the engineering school at a major university have been women. In a recent, randomly selected graduating class of 210 students, 58 were females. Does the sample data present convincing evidence that the proportion of female graduates from the engineering school has shifted (changed)? Use α = 0.05. Determine what type of error (Type I or II) could be made in the question above.

A survey of 300 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take notes. Suppose that based on the​ survey, 135 of the 300 students responded​ "yes."

​a) What is the value of the sample proportion p^?

​b) What is the standard error of the sample​ proportion?

​c) Construct an approximate 95 confidence interval for the true proportion p by takingplus or minus 2 SEs from the sample proportion.

In chapter 8 we can see how the course of both Weses' lives have gone in completely different directions. Author Wes is accepted at a prestigious university and receives a scholarship. Other Wes sentenced to life in prison. What do you think was Author Wes Moore's purpose in writing this book? What evidence do you have from the book to back up your answer?