Mathematics, 05.12.2019 02:31 nancylagunas805
The life in hours of a 75-watt light bulb is known to be normally distributed with σ = 22 hours. a random sample of 20 bulbs has a mean life of x overscript bar endscripts = 1012 hours. suppose that we wanted the total width of the two-sided confidence interval on mean life to be six hours at 95% confidence. what sample size should be used? round up the answer to the nearest integer.
Answers: 2
Another question on Mathematics
Mathematics, 21.06.2019 14:20
James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b? will mark the
Answers: 1
Mathematics, 21.06.2019 16:30
The sales tax rate is 7.25%. how much tax in dollars is added on an item that costs $56.00? a. $4.06 b. $7.25 c. $14.50 d. $60.06
Answers: 2
Mathematics, 21.06.2019 18:00
If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)
Answers: 1
Mathematics, 21.06.2019 20:30
Answer asap evaluate 4-0.25g+0.5h4−0.25g+0.5h when g=10g=10 and h=5h=5.
Answers: 3
You know the right answer?
The life in hours of a 75-watt light bulb is known to be normally distributed with σ = 22 hours. a r...
Questions
English, 24.08.2019 06:00
Mathematics, 24.08.2019 06:00
History, 24.08.2019 06:00
History, 24.08.2019 06:00
English, 24.08.2019 06:00
Chemistry, 24.08.2019 06:00
Mathematics, 24.08.2019 06:00
History, 24.08.2019 06:00
Social Studies, 24.08.2019 06:00
