![jared3274](/avatars/28228.jpg)
jared3274
22.02.2020 •
Mathematics
The Boeing 787-8 Dreamliner is designed to be 186 feet in length. The manufacturing process for assembling the 787-8 follows a bell shaped symmetric distribution with mean 185.4 feet and standard deviation 0. 5 feet. What proportion of the 787-8 airplanes are between 185' and 187'
Solved
Show answers
More tips
- S Society and Politics Why Did Medvedev Announce a New Privatization of State Property?...
- F Family and Home Stay Warm but Don t Overheat: What is the Optimal Temperature for Your Home During Winter?...
- H Health and Medicine How to Treat the Flu: A Comprehensive Guide...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
Answers on questions: Mathematics
- M Mathematics A triangle has sides with lengths of 6 centimeters, 5 centimeters, and 3 centimeters. Is it a right triangle?...
- M Mathematics Elena biked 8 miles on Saturday. Use the double number line to answer the questions. Be prepared to explain your reasoning. A double number line. Expand Image What is 100% of her Saturday...
- P Physics At the local playground, a 21-kg child sits on the right end of a horizontal teeter-totter, 1.8 m from the pivot point. On the left side of the pivot an adult pushes straight down...
- B Business You are considering opening a fast-food store. your fixed costs for the required land, building, parking lot paving, kitchen equipment, and neon sign will be $1,000,000. the variable...
- H History Can someone please rewrite this in their own words I’ll give u !...
- M Mathematics It takes Daphne 25 minutes to assemble a model plane. During her work day Daphne takes 30 minutes for lunch and one 15 minute break. Which inequality could Daphne use to determine...
- M Mathematics A purse originally cost $45.99. This week, it is on sale for 25% off. What is the sale price of the purse? A $11.50 B. $18.40 C. $25.00 D. $34.49...
Ответ:
78.74% of the 787-8 airplanes are between 185' and 187'.
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean
and standard deviation
, the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
What proportion of the 787-8 airplanes are between 185' and 187'?
This is the pvalue of Z when X = 187 subtracted by the pvalue of Z when X = 185. So
X = 187
X = 185
0.9993 - 0.2119 = 0.7874
78.74% of the 787-8 airplanes are between 185' and 187'.
Ответ:
b on ed
Step-by-step explanation: