This topic contains a solution. Click here to go to the answer

Author Question: A recent survey found that 63% of all adults over 50 wear glasses for driving. In a random sample of ... (Read 110 times)

jerry coleman

  • Hero Member
  • *****
  • Posts: 570

Question 1

The probability that an individual is left-handed is 0.16. In a class of 80 students, what is the mean and standard deviation of the number of left-handed students? Round to the nearest hundredth when necessary.
◦ mean: 12.8; standard deviation: 3.28
◦ mean: 80; standard deviation: 3.58
◦ mean: 12.8; standard deviation: 3.58
◦ mean: 80; standard deviation: 3.28

Question 2

A recent survey found that 63% of all adults over 50 wear glasses for driving. In a random sample of 20 adults over 50, what is the mean and standard deviation of the number who wear glasses? Round to the nearest hundredth when necessary.
◦ mean: 12.6; standard deviation: 3.55
◦ mean: 7.4; standard deviation: 2.16
◦ mean: 7.4; standard deviation: 3.55
◦ mean: 12.6; standard deviation: 2.16


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by jerry coleman on Feb 14, 2020

Gabe

  • Sr. Member
  • ****
  • Posts: 321
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly




jerry coleman

  • Member
  • Posts: 570
Reply 2 on: Feb 14, 2020
Gracias!


milbourne11

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

For a complete list of videos, visit our video library