The weights for newborn babies is approximately normally distributed with a mean of 6.2 pounds and astandard deviation of 1.4 pounds.Consider a group of 1600 newborn babies:1. How many would you expect to weigh between 4 and 8 pounds?2. How many would you expect to weigh less than 6 pounds?3. How many would you expect to weigh more than 5 pounds?4. How many would you expect to weigh between 6.2 and 10 pounds?HINT: Do not round until you get your final answer.Submit Question

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Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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select the letter of the correct answer in the Choices. Questions: 1. What is the mean? Choices: A. 65 B. 75 C. 85 D. 95 2. What is the standard deviation? Choices: A. 10 B. 5 C. 15 D. 20 3. What is the area of the shaded region? Choices: A. 0.9972 B. 0.9525 C. 0.9544 D. 0.0228
You volunteered to be part of the medical mission in your barangay and were in charge to get the weights of the children. The weights of 1000 children have an average of 45 kilograms and a standard deviation of 5 kilograms. a. How many children weigh 35 kg to 55 kg? b. How many are in the upper 10% of the population?
The weights for newborn babies is approximately normally distributed with a mean of 6.8 pounds and a standard deviation of 2.1 pounds. Consider a group of 900 newborn babies: 1. How many would you expect to weigh between 4 and 9 pounds? 2. How many would you expect to weigh less than 8 pounds? 3. How many would you expect to weigh more than 7 pounds? 4. How many would you expect to weigh between 6.8 and 10 pounds? HINT: Do not round until you get your final answer. Submit Question
In the 1992 presidential election, Alaska's 40 election districts averaged 1824 votes per district for President Clinton. The standard deviation was 573. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places.a. What is the distribution of X? X ~ N(,)b. Is 1824 a population mean or a sample mean? c. Find the probability that a randomly selected district had fewer than 1872 votes for President Clinton. d. Find the probability that a randomly selected district had between 1842 and 2091 votes for President Clinton. e. Find the first quartile for votes for President Clinton. Round your answer to the nearest whole number.
Cole Fingers owns 20,000 milk cows that he milks by hand. The total amount of milk produced by Cole’s cows varies from day to day depending on weather, noise, and other conditions. Cole has just finished milking 100 of the cows. An average of 2 gallons of milk per cow was obtained with a sample standard deviation of .5 gallons. a. What is your forecast for the total milk production today from all 20,000 cows? b. Construct an 68% confidence interval around your forecast.
Based on data from the 2000 Census the average age of a Baldwin County, Alabama resident is 39 years with a standard deviation of 22. 6 . The data is normally distributed. The median age, in years, is: Group of answer choices 23 29 39 20
II. Refer to the problem below. Show complete solutions. Box and label your final answers. The systolic blood pressure (given in millimeters) of females has an approximately normal distribution. 95% of the female students in a school have a systolic blood pressure between 97 mm and 153 mm. 1. Determine the mean. 2. Determine the standard deviation
The weights for newborn babies is approximately normally distributed with a mean of 6.5 pounds and a standard deviation of 1.3 pounds.Consider a group of 1400 newborn babies:1. How many would you expect to weigh between 3 and 8 pounds? 2. How many would you expect to weigh less than 6 pounds? 3. How many would you expect to weigh more than 4 pounds? 4. How many would you expect to weigh between 6.5 and 10 pounds?
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10. On a history exam, Roberto had a score of 72, which was exactly 3 standard deviations below the mean. The standard deviation for the exam is 4. a. What score was 2 standard deviations above the mean? b. What percent of the scores were at least 88? 72 c. What score represents the mean? d. What percent of the scores were between 80 and 88?
In the 1992 presidential election, Alaska's 40 election districts averaged 2038 votes per district for President Clinton. The standard deviation was 576. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places.a. What is the distribution of X? X ~ N(,)b. Is 2038 a population mean or a sample mean? Select an answer Population Mean Sample Mean c. Find the probability that a randomly selected district had fewer than 1842 votes for President Clinton. d. Find the probability that a randomly selected district had between 1997 and 2099 votes for President Clinton. e. Find the first quartile for votes for President Clinton. Round your answer to the nearest whole number.
Consider the following data set. You may assume that the mean of this data set is x¯ = 7. 8 10 3 5 7 5 11 a) Find the range of the data set. b) Find the standard deviation of the data set. c) How many of the seven data points lie within one standard deviation of the mean?

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