Can you please help me answer these questions.

1. An insurance company wants to estimate the percentage of 16 year olds who make an insurance claim in their first year of driving. They take a sample of 1500 16-year olds who are insured with their company. Match the following:

• ____ percentage of 1500 16-year olds who are insured with the company who make an insurance claim in their first year of driving
• ____ percentage of all 16-year olds who are insured with the company who make an insurance claim in their first year of driving
• ____1500 16-year olds who are insured with the company
• ____ whether or not they made an insurance claim in their first year of driving
• ____ a 16-year old who is insured with the company
• ____ all 16-year olds who are insured with the company

1. parameter
2. variable
3. population
4. individual
5. statistic
6. sample

2. Match each of the following to the type of sampling technique used:

• Match each of the following to the type of sampling technique used:
• ____ A company takes the first 10 batches of a product made and counts the number of defective items in each of these batches.
• ____A company groups the batches of a product made in a month into which shift they were made. The number of defective items is counted in randomly selected batches in each shift.
• ____ A company chooses every 15th batch of a product off the assembly line and counts the number of defective items in each chosen batch.
• ____ A company divides the batches of a product made in a month into which day they were made. Then certain days are picked and every batch made that day is counted to determine the number of defective items.
• -____ A company lists all of the batches of a product made in a given month. The number of defective items is counted in randomly selected batches.

1. simple random sample
2. convenience sample
3. stratified sample
4. cluster sample
5. systematic sample

3. Below are the ages and salaries (in thousands of dollars) for CEOs of small companies. Round your answers to the nearest tenth, if necessary.

CEO	Age	Salary
1	53	145
2	43	621
3	33	262
4	45	208
5	46	362
6	55	424
7	37	300
8	41	339
9	55	736
10	36	291
11	45	58
12	55	498
13	50	643
14	49	390
15	47	332
16	69	750

(a) Find the mean CEO age. (b) Find the median CEO age. (c) Find the mean CEO salary. (d) Find the median CEO salary. (e) Are the salaries skewed right, skewed left, or approximately symmetric? Select an answer Skewed right Skewed left Approximately symmetric.

a) screwed right b) screwed left c)approx symmetric

4. In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 53 and a standard deviation of 7. Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 39 and 67? Do not enter the percent symbol. ans = _______%

5. Based on the data shown below, calculate the slope and y-intercept and determine the regression line.

x	y
4	27.74
5	28.35
6	32.86
7	34.37
8	36.88
9	37.79
10	41.6
11	44.21
12	47.12
13	52.03
14	54.24
15	54.05
16	56.56

Round each value to two decimal places. y= _____+_____x

6. A group of people were asked if they had run a red light in the last year. 348 responded "yes", and 280 responded "no". Find the probability that if a person is chosen at random, they have run a red light in the last year. _____________ Give your answer as a fraction or decimal accurate to at least 3 decimal places.