![hajanaetowens](/avatars/7606.jpg)
hajanaetowens
18.11.2020 •
Mathematics
The weight of a shaft that is produced by a firm is normally distributed with a mean of 15 pounds. Determine the standard deviation of weight such that 99% of the shafts weighs less than 16.5 pounds. Assume a standard deviation of 0.55 for the shaft. If the firm wants 95% of the shafts it produces to weigh more than 14 pounds, what should be the mean weight for the shafts.
Solved
Show answers
More tips
- F Family and Home How to Sew Curtain Tapes: Best Tips from Professionals...
- A Animals and plants How to Grow Lime from a Seed: Simple Tips and Interesting Facts...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Mathematics
- M Mathematics Two thirds of a number is negative Twenty...
- M Mathematics Chloe earned a grade of 87% on her multiple choice math final that had a total of 200 problems. How many problems on the final exam did Chloe answer correctly?...
- M Mathematics What is the distance between the points (-5,-4) and (3,-3) on a coordinate plane?...
- M Mathematics Choosing 4 CD s out of a list of 100 in a record club offer...
- M Medicine What are the three major cartilages that form the larynx?...
- M Mathematics You have a 1-gallon paint can in the shape of a cylinder. one gallon is 231 cubic inches. the radius of the can is 3 inches. what is the approximate height of the...
- M Mathematics What are the dimensions of a box that can hold 800 cubic cm of water and has the least surface area?...
Ответ:
σ = 0.6438
Step-by-step explanation:
Given that:
The mean = 15
sample mean = 16.5
At 99% C.I, the level of significance is = 1 - 0.99 = 0.01
By applying the central limit theorem;
σ = 0.6438
Assuming the S.D of the shaft = 0.55
At 95% confidence interval level, from the tables, the z value = -1.64
Using the central limit theorem
If we make the mean
, the subject of the formula: we have:
Ответ:
f=1
g=0
h=2
so that g<f<h