Heights of 10 year olds. Heights of 10 year olds, regardless of gender, closely follow a normal distribution with mean 55 inches and standard deviation 6 inches.1. (a) The height requirement for Batman the Ride at Six Flags Magic Mountain is 54 inches. What percent of 10 year olds cannot go on this ride?2. (b) Suppose there are four 10 year olds. What is the chance that at least two of them will be able to ride Batman the Ride?3. (c) Suppose you work at the park to help them better understand their customers' demographics, and you are counting people as they enter the park. What is the chancethat the first 10 year old you see who can ride Batman the Ride is the 3rd 10 year old who enters the park?4. (d) What is the chance that the fifth 10 year old you see who can ride Batman the Ride is the 12th 10 year old who enters the park?

Given Information: Heights of 10 year olds, follow a normal distribution with mean μ=55 inches and…

Answered: Heights of 10 year olds. Heights of 10…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In the 1992 presidential election, Alaska's 40 election districts averaged 1989 votes per district for President Clinton The standard deviation was 570. (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. 1 1989 a population mean or a sample mean? Select an answer Y c. Find the probability that a randomly selected district had fewer than 2073 votes for President Clinton. d. Find the probability that a randomly selected district had between 2135 and 2250 votes for President Clintorn. e. Find the third quartile for votes for President Clinton Round your r answer to the nearest whole num ber
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Jesse scored a +12 while golfing and, 18 pointswhile playing basketball.The statistics for histeammates for each sport are given below.
Exercise 2. A test has been devised to measure a student's level of motivation during high school. The motivation scores on this test are approximately normally distributed with a mean of 25 and a standard deviation of 6. The higher the score the greater the motivation to do well in school. a. What percentage of students taking this test will have scores grater than 30? b. What percentage of students taking this test will have scores below 10? c. What percentage of students taking this test will have scores between 13 and 26?
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In the 1992 presidential election, Alaska's 40 election districts averaged 2125 votes per district for President Clinton. The standard deviation was 564. (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 to two decimal places. a. What is the distribution of X? X - N( b. Is 2125 a population mean or a sample mean? | Select an answer c. Find the probability that a randomly selected district had fewer than 1995 votes for President Clinton. d. Find the probability that a randomly selected district had between 2187 and 2311 votes for President Clinton. e. Find the third quartile for votes for President Clinton. Helpful videos: P(x a number) 2, P(x is between two numbers) 2, Finding a percentile 2, Using the invNormal with greater than problems 2, Finding the IQR Hint 7…
myopenmath.com The following table shows the number of people that are either 18, 19, 20 or 21 years old, from a sample of 269 people. a) Complete the table. Age 18 19 20 21 Number of people 61 72 59 (b Find the mean for this sample. Give your answer to at least 2 decimal places. (c Find the standard deviation for this sample. Give your answer to at least 2 decimal places. Question Help:Written Example Message instructor Submit Question Jump to Answer
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D A school is tracking its freshmen attendance for the first marking period. Shown below is a table summarizing their findings for the 284 members of the freshmen class. (a) Find the mean and median number of days absent. Round your mean to the nearest tenth. (b) What is the population standard deviation for this data set? Round to the nearest tenth. (c) What proportion of the population that has an absenteeism greater than 4 days? Days Absent Number of Students (x) (fi) 0 158 1 64 2 18 3 22 4 4 5 7 6 8 9 2 13 1
are all equal. 3. If a set of grades for a class has a large range and a small standard deviation, what can you say about the class? Include an interpretation that is specific to grades in a class. 4. Why is the median less affected by skewed data than the mean? 5. Is most data likely to be skewed or symmetric? There is no right or wrong here but discuss and take a side on the issue.
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