A brand of lightbulb has an average life of 600 hr, with a standard deviation of...
A brand of lightbulb has an average life of 600 hr, with a standard deviation of 40 hr. The length of life of the bulb can be closely approximated by a normal curve. A warehouse manager buys and installs 10,000 such bulbs. Find the total number that can be expected to last less than
716 hr
The total number of bulbs that can be expected to last less than
716 hr is
(Round to the nearest whole number as needed.)
Homework Answers
μ = 600
σ = 40
P( X < 716)
Z = X - μ / (σ / √n)
Z = 716 - 600 /( 40)
Z = 2.9
P( z < 2.9)
= 0.5 + 0.4981
= 0.9981
Number of bulbs that last less than 716 hr
= 0.9981 x 10000
= 9981
Add Answer to:
A brand of lightbulb has an average life of 600 hr, with a
standard deviation of...
A brand of lightbulb has an average life of 600 hr, with a standard deviation of...
A brand of lightbulb has an average life of 600 hr, with a standard deviation of 50 hr. The length of life of the bulb can be closely approximated by a normal curve. A warehouse manager buys and installs 10,000 such bulbs. Find the total number that can be expected to last less than 730 hr. the total number of bulbs that can be expected to last less than 730 hr is ? (Round to the nearest whole number as...
a certain type of light bulb has an average of 700 hours, with a standard deviation...
a certain type of light bulb has an average of 700 hours, with
a standard deviation of 150 hours. The length of life of the bulb
can be closely approximated by a normal curve. An amusement park
buys and installs 40,000 such bulbs. Find the total number that can
ve expected to last more than 640 hours.
This Question: 4 pts 3 of 42 (0 complete This Test: 150 pts possible o A certain type of light bulb has an...
Suppose that a brand of lightbulb lasts on average 2875 hours with a standard deviation of...
Suppose that a brand of lightbulb lasts on average 2875 hours with a standard deviation of 205 hours. Assume the life of the lightbulb is normally distributed. Calculate the probability that a particular bulb will last from 2826 to 3396 hours? P(2826 < X < 3396) = Enter your answer as a number accurate to 4 decimal places. *Note: all z-scores must be founded to the nearest
A dishwasher has a mean life of 12 years with an estimated standard deviation of 1.25...
A dishwasher has a mean life of 12 years with an estimated standard deviation of 1.25 years "Appliance life expectancy," 2013). Assume the life of a dishwasher is normally distributed. a.) True or False: The random variable x defines the life expectancy of a dishwasher b.) Find the probability that a dishwasher will last more than 15 years. c.) Find the probability that a dishwasher will last less than 8 years. d.) Find the probability that a dishwasher will last...
1. Suppose that Adam's willingness To Pay (WTP) for a shirt of a particular brand is...
1. Suppose that Adam's willingness To Pay (WTP) for a shirt of a particular brand is equal to 525. The market price of the brand is initially = $35 (thus, Adam's "consumer's surplus" SO, since he won't buy the shirt at that price). But then the brand becomes less popular (although Adam's WTP still equals 5 25; note that the Demand Curve will shift to the left when the brand becomes less popular). a.) Use a relevant graph to show...
IB math studies 1. Ten students were asked for their average grade at the end of their last year...
IB math studies
1. Ten students were asked for their average grade at the end of their last year of high school and their average grade at the end of their last year at university. The results were put into a table as follows: Student High School grade, University grade, y 90 3.2 2.6 75 80 3.0 70 95 3.8 85 90 3.8 2.8 70 95 85 3.0 3.5 10 Total 835 30.4 (a) Given that s, 8.96, sy-0.610 and...
Please answer the marked questions.......... Please show your work............. that all young adult men is greater...
Please answer the marked questions..........
Please show your work.............
that all young adult men is greater the IC than 50 min d the 65 74 66 37 45 68 64 50 48 65 58 55 52 63 59 57 74 65 the 11.38 1138 The club professional at a difficul that his course is so tough that t course boasts average golfer loses a dozen or more golf balls d ng a round of golf. A dubious golfer sets out...
1. We reject the null hypothesis only when: a. our sample mean is larger than the population mean. b. the p value asso...
1. We reject the null hypothesis only when: a. our sample mean is larger than the population mean. b. the p value associated with our test statistic is greater than the significance level of the test we have chosen. c. our sample mean is smaller than the population mean. d. the p value associated with our test statistic is smaller than the significance level of the test we have chosen. 2. In a study of simulated juror decision making, researchers...
and traditional cost compare results. (LO 1,2). AN Inspecting 17.3A Shaker Stairs Co. designs and builds...
and traditional cost compare results. (LO 1,2). AN Inspecting 17.3A Shaker Stairs Co. designs and builds factory-made premium wooden stairways for homes. The manufactured stairway components (spindles, risers, hangers, hand rails) d i permit installation of stairways of varying lengths and widths. All are of white oak wood. ng lengths and widths. All are of white onk wood Budgeted manufacturing overhead costs for the year 2017 are as follows. Overhead Cost Pools Amount Purchasing $ 75,000 Handling materials 82,000 Production...
BEACON LUMBER, MONTH OF DECEMBER TRANSACTIONS Dec 1 Beacon purchases a general liability insurance policy for...
BEACON LUMBER, MONTH OF DECEMBER TRANSACTIONS Dec 1 Beacon purchases a general liability insurance policy for $1,200, paying cash. The term of the policy is one year, from Dec 1, 20X1 through Nov 30, 20X2. Dec 1 Beacon purchases a forklift for $10,000, paying half in cash and half with a 5 year, 12% note. The forklift is a well-made American Machine & Foundry product, and it is expected to last for 10 years. Dec 1 Beacon purchases office equipment...
a certain type of light bulb has an average of 700 hours, with
a standard deviation of 150 hours. The length of life of the bulb
can be closely approximated by a normal curve. An amusement park
buys and installs 40,000 such bulbs. Find the total number that can
ve expected to last more than 640 hours.
This Question: 4 pts 3 of 42 (0 complete This Test: 150 pts possible o A certain type of light bulb has an...
Suppose that a brand of lightbulb lasts on average 2875 hours with a standard deviation of 205 hours. Assume the life of the lightbulb is normally distributed. Calculate the probability that a particular bulb will last from 2826 to 3396 hours? P(2826 < X < 3396) = Enter your answer as a number accurate to 4 decimal places. *Note: all z-scores must be founded to the nearest
A dishwasher has a mean life of 12 years with an estimated standard deviation of 1.25 years "Appliance life expectancy," 2013). Assume the life of a dishwasher is normally distributed. a.) True or False: The random variable x defines the life expectancy of a dishwasher b.) Find the probability that a dishwasher will last more than 15 years. c.) Find the probability that a dishwasher will last less than 8 years. d.) Find the probability that a dishwasher will last...
1. Suppose that Adam's willingness To Pay (WTP) for a shirt of a particular brand is equal to 525. The market price of the brand is initially = $35 (thus, Adam's "consumer's surplus" SO, since he won't buy the shirt at that price). But then the brand becomes less popular (although Adam's WTP still equals 5 25; note that the Demand Curve will shift to the left when the brand becomes less popular). a.) Use a relevant graph to show...
IB math studies
1. Ten students were asked for their average grade at the end of their last year of high school and their average grade at the end of their last year at university. The results were put into a table as follows: Student High School grade, University grade, y 90 3.2 2.6 75 80 3.0 70 95 3.8 85 90 3.8 2.8 70 95 85 3.0 3.5 10 Total 835 30.4 (a) Given that s, 8.96, sy-0.610 and...
Please answer the marked questions..........
Please show your work.............
that all young adult men is greater the IC than 50 min d the 65 74 66 37 45 68 64 50 48 65 58 55 52 63 59 57 74 65 the 11.38 1138 The club professional at a difficul that his course is so tough that t course boasts average golfer loses a dozen or more golf balls d ng a round of golf. A dubious golfer sets out...
and traditional cost compare results. (LO 1,2). AN Inspecting 17.3A Shaker Stairs Co. designs and builds factory-made premium wooden stairways for homes. The manufactured stairway components (spindles, risers, hangers, hand rails) d i permit installation of stairways of varying lengths and widths. All are of white oak wood. ng lengths and widths. All are of white onk wood Budgeted manufacturing overhead costs for the year 2017 are as follows. Overhead Cost Pools Amount Purchasing $ 75,000 Handling materials 82,000 Production...
Most questions answered within 3 hours.
-
You are attempting to calculate a firm’s free cash flow to
equity. You know the following...
asked 49 minutes ago -
the following reaction occurs in a balloon containing
N2O2 gas
N2O4(g)=2NO2(g)
will the volume of the...
asked 1 hour ago -
answer the questions throughout this program
public class Day implements Comparable {
Private Boolean atWork;...
asked 1 hour ago -
This is C++ code for parking fee management program
#include <iostream>
#include <iomanip>
using namespace std;...
asked 1 hour ago -
The free energy change for the following reaction at 25 °C, when
[Sn2+] = 1.17 M...
asked 3 hours ago -
An MNE is this kind of industry when competition in one country
is essentially independent of...
asked 4 hours ago -
. For this set of questions, determine what
proportion of a normal distribution is located betweeneach...
asked 5 hours ago -
A college student is employed as a door-to-door newspaper
salesman. Historical data suggests that the student...
asked 6 hours ago -
MATLAB HW 11 problem using Switch Case and Input commands
Write a script file that calculates...
asked 6 hours ago -
Considering gravitational time dilation, calculate the time that
passes in Earth’s surface while 1 hour passes...
asked 6 hours ago -
Minitab Problem: Take the Lake Hume June rainfall data and find
use the processes outlined in...
asked 7 hours ago -
X Company is trying to decide whether to continue using old
equipment to make Product A...
asked 7 hours ago