The time required for an automotive center to complete an oil change service on an automobile approximately follows a normal distribution, with a mean of 15 minutes and a standard deviation of 3 minutes. (a) The automotive center guarantees customers that the service will take no longer than 20 minutes. If it does take longer, the customer will receive the service for half-price. What percent of customers receiv service for half-price? (b) If the automotive center does not want to give the discount to more than 3% of its customers, how long should it make the guaranteed time limit? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) The percent of customers that receive the service for half-price is 4.75 %. (Round to two decimal places as needed.) (b) The guaranteed time limit is minutes. (Round up to the nearest minute.)

much will each of you get? Make sure your answer has the correct number of significant digits. 56. You are considering a new job with a long commute. To mea. sure the distance, you drive from your home to the worksite and back. Your car's odometer reports the round-trip dis- tance as 53.8 km. If you made exactly 20 trips to this new job in a month, how many miles would you commute? Report your answer to the correct number of significant digits. 58. While working with a wildlife biologist, you have the task of sampling the average size of bluegills (Figure 2.21) in a nearby river. In one day you catch eight fish with the fol- lowing length measurements: 10.2 cm, 15.1 cm, 15.3 cm, 19.5 cm, 12.1 cm, 14.3 cm, 23.4 cm, and 16.1 cm. What is the average length of the fish you caught? Make sure your answer has the correct number of significant digits.

2. Maria deposits $10,000 in the bank. Each month thereafter she deposits $1000 a month . Use formulas to determine how much money she will have in the bank after 2 years? (month 24) .

1. Fill the missing spots: Abena currently has $3,450 in their savings account. If they started depositing $50 a week into their savings account it would take them _____ weeks to double their money. This is _____ (longer/short) than a year since there are weeks in a year. 2. Ha Eun currently has a rectangular patio in their back yard that is 7 feet long and 5 feet wide. They are going to add onto this patio so that the length and width would be double their current size. How many times bigger, with respect to the area, will the new patio be relative to the old patio?