The speed limit on Lake Buena Vista Road is 25 miles per hour. Many residents believe the mean speed of all cars exceeds the posted speed limit and that a greater police presence should be put into effect, and radar speed signs should be located at the roadside. To test this claim, the speed of 18 randomly selected cars is recorded. The data gathered from this study are as follows: 23, 26, 24, 25, 28, 26, 23, 24, 27, 25, 27, 24, 25, 23, 22, 25, 24, and 25 miles per hour with a standard deviation of 1.55. What is the calculated p-value and t-statistic?

1     sepan

2     encuentren

3     tenga

4     hable

5   parezca

6   llegue

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

7,24

step-by-step explanation: