1 / 12

Chapter 7 day 1

Chapter 7 day 1. BELL RINGER!. Bell Ringer 43:.

pelham
Download Presentation

Chapter 7 day 1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 7 day 1 BELL RINGER!

  2. Bell Ringer 43: The temperature in a sealed container for growing a particular strand of plant is normally distributed over the 60-day growth period. The average temperature in the container during this process is 83.2 degrees with a standard deviation of 5.4 degrees. The plants cannot produce flowers if the temperature of the container is between 84 and 90 degrees. How many days in the growth period can produce flowers?

  3. Chapter 7 day 2 BELL RINGER!

  4. Bell Ringer 44: Unoccupied seats on flights cause airlines to lose revenue. Suppose a large airline wants to estimate its average number of unoccupied seats per flight over the past year. To accomplish this, the records of 225 flights are randomly selected, and the number of unoccupied seats is noted for each of the sampled flights. The sample mean is 11.6 seats and the standard deviation is 4.1 seats. Estimate m, the Mean number of unoccupied seats during the past year, using a 90% confidence interval.

  5. Chapter 7 day 3 BELL RINGER!

  6. Bell Ringer 45: A researcher wishes to estimate within $300 the true average amount of money a county spends on road repairs each year. If she wants to be 90% confident, how large a sample is necessary? The standard deviation is known to be $900.

  7. Chapter 7 day 4 BELL RINGER!

  8. Bell Ringer 46: For a group of 20 students taking a final exam, the mean heart rate was 96 beats per minute, and the standard deviation was 5. Find the 95% confidence interval of the true mean.

  9. Chapter 7 day 5 BELL RINGER!

  10. No Bell Ringer: Get out your Practice WS from yesterday

  11. Chapter 7 day 6 BELL RINGER!

  12. Bell Ringer 47: A sample of 500 nursing applications included 60 from men. Find the 90% confidence interval of the true proportion of men who applied to the nursing program.

More Related