T↑For a recent 10k run, the finishers are normally distributed with mean 58 minutes and standard deviation 12 minutes. Complete parts (a) through (d) below.Click here to view page 1 of the standard normal distribution table.Click here to view page 2 of the standard normal distribution table.a. Determine the percentage of finishers with times between 45 and 70 minutes.Approximately 70.12 % of finishers had times between 45 and 70 minutes.(Round to two decimal places as needed.)b. Determine the percentage of finishers with times less than 75 minutes.Approximately 92.17 % of finishers had times less than 75 minutes.(Round to two decimal places as needed.)c. Obtain and interpret the 30th percentile for the finishing times.The 30th percentile is 51.71 minutes.(Round to two decimal places as needed.)Interpret the 30th percentile. Select the correct choice below and fill in the answer box(es) to complete your choice.(Type integers or decimals rounded to two decimal places as needed.)OA. This percentile means that % of the finishing times are less thanOB. This percentile is the value that is % greater than the smallest finishing time..OC. This percentile means that % of the finishing times are equal toOD. This percentile is the value that is% less than the average finishing time.

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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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pr The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 308 days or longer. b. If the length of pregnancy is in the lowest 4%, then the baby is premature. Find the length that separates premature babies from those who are not premature. /2 pr Click to view page 1 of the table. Click to view page 2 of the table. /2 a. The probability that a pregnancy will last 308 days or longer is (Round to four decimal places as needed.) pr b. Babies who are born on or before 12 days are considered premature. (Round to the nearest integer as needed.) /2 12 uc /2 12 or /2 or (2 Enter your answer in each of the answer boxes.
Solve for C
Use the normal distribution of SAT critical reading scores for which the mean is 514 and the standard deviation is 115. Assume the variable x is normally distributed. (a) What percent of the SAT verbal scores are less than 650? (b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 550? Click to view page 1 of the standard normal table. LOADING... Click to view page 2 of the standard normal table. LOADING... Question content area bottom Part 1 (a) Approximately 1.181.18% of the SAT verbal scores are less than 650. (Round to two decimal places as needed.) Part 2 (b) You would expect that approximately 0.880.88 SAT verbal scores would be greater than 550. (Round to the nearest whole number as needed.)
I Professor Brown administered an achievement test, which as he remembers from years of experience, yielded a population mean score of 85. If his class of 25 students obtained a mean score of 89 with standard deviation score of 14, can the professor claim that his class is a superior class? Assume that the mean score is approximately normally distributed. Use a = 0.01
The data in the table is points scored by a basketball team in a certain period of time. Use the data in the table to answer the bulleted statements.
A uniform distribution has endpoints 4 and 18. What is the 90th percentile, reporting to one decimal place?
Refer to the accompanying data set and use the 25 home voltage measurements to construct a frequency distribution with five classes. Begin with a lower class limit of 120.8 volts, and use a class width of 0.2 volt. Does the result appear to have a normal distribution? Why or why not? Click the icon to view the data. Complete the frequency distribution below. Voltage (volts) Frequency 120.8- (Type integers or decimals rounded to the nearest tenth as needed.) Voltage Measurements From a Home Home Home (volts) Day (volts) Day 121.0 15 121.5 22 121.2 16 121.3 23 121.4 17 120.9 24 121.3 18 121.0 25 121.2 19 121.3 121.2 20 121.7 21 121.5 Home (volts) Day 121.1 8 121.5 9 121.2 10 121.5 11 12 13 121.2 14 121.1 Day 1 2 3 4 5 121.6 6 120.8 7 Home Full (volts) data 121.2 set 121.1 121.0 121.2
30 min in the university student's daily time devoted to sports in Turkey. average and 3 min. It is known to show normal distribution with standard deviation. How many of 8 million university students spend 1 hour a day for sports?
When we describe our data, we list three basic properties of the frequency distribution. One of them is the shape of the distribution. The other two are: the independent and dependent variables a measure of central tendency and a measure of variability the variance and the standard deviation whether it is normal or skewed
z Scores LeBron James, one of the most successful basketball players of all time, has a height of 6 feet 8 inches, or 203 cm. Based on statistics from Data Set 1 “Body Data” in Appendix B, his height converts to the z score of 4.07. How many standard deviations is his height above the mean?
Chrome - → C Gmail File Edit View History Home - myRCC mylearning.suny.edu/d21/le/content/920969/viewContent/25846459/View I We are going to calculate the standard deviation for the following set of POPULATION data. 1) First, calculate the mean. μ= 14 2) Fill in the table below. Fill in the differences of each data value from the mean, then the squared differences. 3) Calculate the standard deviation. 12 13 5 X 1 Bookmarks Profiles Tab Window Help σ= Total T-μ (T-μ)² Standard deviation: A.2 HW-23FA STATISTICS (81 X + Σ(x-μ)² N Question Help: Video Submit Question Round to two decimal places BL SEP 15 + MacBook Air 2
The Internal Revenue Service reports that the mean federal income tax paid in the year 2010 was $8040. Assume that the standard deviation is $4900. The IRS plans to draw a sample of 1000 tax returns to study the effect of a new tax law. Do you think it would be unusual for an individual to pay a tax of less than $7800? Explain. Assume the variable is normally distributed. Round the answer to at least four decimal places.

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