Question

In: Statistics and Probability

he weight of gravel, in kilograms, collected by a power shovel may be modeled by a...

he weight of gravel, in kilograms, collected by a power shovel may be modeled by a normal distribution with unknown mean, µ, and standard deviation 50. The weights of a random sample of 20 collections have a mean of 1030 kg.Calculate the margin of error for a 99% confidence interval estimate of µ.State the 99% confidence interval for the mean, µ.What sample size is needed so that the error is no more than 15 kg?

Solutions

Expert Solution

orchestra answered 2 years ago
Next > < Previous

Related Solutions

The weight of gravel, in kilograms, collected by a power shovel may be modeled by a...
The weight of gravel, in kilograms, collected by a power shovel may be modeled by a normal distribution with unknown mean, µ, and standard deviation 50 kg. The weights of a random sample of 20 collections have a mean of 1030 kg. Answer the following questions round all FINAL answers to two decimal places. (a) What is the point estimate of the mean weight of gravel that the shovel can collect? (b) Calculate the margin of error for a 95%...
Blood fat content may be influenced by many factors including age and weight. A nutritionist collected...
Blood fat content may be influenced by many factors including age and weight. A nutritionist collected data on blood fat content, age and weight from sample of people. The data are saved in the file Assn1Q4.sav. The aim was to investigate how blood fat content is related to age and weight of individuals. [1 pt.]Check if the linear regression is appropriate to model the blood fat content depending on age and weight? [1 pt.] Give the estimated egression equation of...
Brain weight B as a function of body weight W in fish has been modeled by...
Brain weight B as a function of body weight W in fish has been modeled by the power function B = 0.007W2/3, where B and W are measured in grams. A model for body weight as a function of body length L (measured in centimeters) is W = 0.12L2.53. If, over 10 million years, the average length of a certain species of fish evolved from 13 cm to 21 cm at a constant rate, how fast was this species' brain...
The weight, in kilograms, of cereal in a box can be modelled by a normal distribution...
The weight, in kilograms, of cereal in a box can be modelled by a normal distribution with Mean ? and standard deviation 5.4 kg. Given that 10% of boxes contains less than D kg. Find. a. The value of ?. b. The percentage of boxes that contain more than (D+4) kg. c. If the machine settings are adjusted so that the weight of cereal in a box is normally distributed with mean (D+3) kg and standard deviation of ?. Given...
The mean weight of an adult is 60 kilograms with a variance of 100 If 118...
The mean weight of an adult is 60 kilograms with a variance of 100 If 118 adults are randomly selected, what is the probability that the sample mean would be greater than 62.2 kilograms? Round your answer to four decimal places.
A power shovel with a dipper of two cubic yard capacity has a standard operating cycle...
A power shovel with a dipper of two cubic yard capacity has a standard operating cycle time of 80 seconds. The excavated material which has a swell factor of 05 will be disposed by a dump truck with an 8 cubic yard capacity at a dump site 6 miles away. The average speed of the dump truck is 30 mph and the dumping time is 40 seconds. Find the daily standard production rates of the power shovel and the dump...
The mean weight of an adult is 71 71 kilograms with a variance of 100 100...
The mean weight of an adult is 71 71 kilograms with a variance of 100 100 . If 181 181 adults are randomly selected, what is the probability that the sample mean would differ from the population mean by greater than 1.2 1.2 kilograms? Round your answer to four decimal places.
a C++ program that reads in weight in pounds and outputs the equivalent length in Kilograms...
a C++ program that reads in weight in pounds and outputs the equivalent length in Kilograms and grams. Use at least three functions: one for input, one or more for calculating, and one for output. Include a loop that lets the user repeat this computation for new input values until the user says he or she wants to end the program. 1 pound (lb) is equal to 0.45359237 kilograms (kg). There are 1000 grams in a kilogram and 16 ounces...
a C++ program that reads in weight in pounds and outputs the equivalent length in Kilograms...
a C++ program that reads in weight in pounds and outputs the equivalent length in Kilograms and grams. Use at least three functions: one for input, one or more for calculating, and one for output. Include a loop that lets the user repeat this computation for new input values until the user says he or she wants to end the program. 1 pound (lb) is equal to 0.45359237 kilograms (kg). There are 1000 grams in a kilogram, and 16 ounces...
2. Write a C++ program that; Takes in the weight of a person in Kilograms, converts...
2. Write a C++ program that; Takes in the weight of a person in Kilograms, converts and outputs the equivalent weight in pounds. Format your output to 3 decimal places. Your output should look like this 53.000 Kg is equivalent to 123.459 Ibs (Note 1Kg = 2.2046226218488 lbs) Takes in the price of an item on an online store in pound sterling, converts and outputs the equivalent price in U.S dollars. Format your output to 2 decimal places. Your output...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT