Remember that the normal curve has 100% total area under the curve and standard units on the x-axis. What is the standard unit value that has 30% of the area to the left of it? In other words, what is the 30th percentile of the normal curve? Choose the answer that is closest. Group of answer choices -0.4 0.4 0.5 -0.5 -0.3

Remember that the normal curve has 100% total area under the curve and standard units on the x-axis. What is the standard unit value that has 30% of the area to the left of it? In other words, what is the 30th percentile of the normal curve? Choose the answer that is closest. Group of answer choices -0.4 0.4 0.5 -0.5 -0.3

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Please answer this in 10 minutes,Thnaks! Calculate the percentile/decile for the following marks obtained by 9 students: Xi 45 32 37 46 39 36 41 48 36 What is D4 ? What is the P68 ? What is Q1 ? What is P55 ?
The blood pressure in millimeters was measured for a large sample of people. The average pressure is 140 mm, and the SD of the measurements is 20 mm. The histogram looks reasonably like a normal curv Use the normal curve to estimate the following percentages. Choose the answer that is closest to being correct. A 19.1% B 30.9% C 38.2% D 69.1% E 68.27% A The percentage of people with blood pressure between 130 and 150 mm. B The percentage of people with blood pressure between 140 and 150 mm. D The percentage of people with blood pressure over 150 mm.
Find the following percentage rank using the picture
Find the interval of z-values associated with each area. a. The middle 75% of the data. b. The top 5% of the data
Find the area, square unit, to the nearest thousandth of the standard deviation between the given z-scores. Z equals 1.12 and z equals 1.73.
Use the standard normal table to find the z-score that corresponds to the given percentile. If the area is not in the table, use the entry closest to the area. If the area is halfway between two entries use the z-score halfway between the corresponding z-scores. If convenient, use technology to find the z-score. P 25 Click to view page 1 of the table. Click to view page 2 of the table. The z-score that corresponds to P25 is (Round to two decimal places as needed.)
Arsenic is toxic to humans and people can be exposed to it through contaminated drinking water, food, dust, and soil. Scientists have devised a non-invasive way to measure a person's level of arsenic poisoning: by examining toenail clippings. In a recent study, scientists measure the level of arsenic (in mg/kg) in toenail clippings of 8 people who lived near a former arsenic mine in Great Britain. The following levels are recorded. 0.8, 1.9, 2.7, 3.4, 3.9, 7.1, 11.9, 26.0 Below are the summary statistics of the data. min Q1 median Q3 max sd n mean 0.8 2.5 3.65 8.3 26 7.2125 8.368041 8 Suppose the 8 people examined were randomly sampled from residents near the former arsenic mine. Is it legitimate to construct a 95% confidence interval for the mean level of arsenic (in mg/kg) in toenail clippings for residents near the former arsenic mine using a t-distribution? Explain briefly.
Please answer the question(s) with the same format as the examples. Thank you.
Suppose you are told your BMI is 32, the 70th percentile for your age and sex. Please interpret this percentile age: 28 Female
The trunk diameter, in centimeters, of a certain variety of pine tree is represented by X~N(150, 30). What is the 75th percentile of trunk diameters? Round to two decimal places.
Estimate the average mark in an exam using the following table: Marks Total Percentage of Students (Type your final answer in decimal form.) Answer: 0-10 0- < 20 0-< 30 0- <400- <50 0.14 0.26 0.56 0.8 1
What percent of the data fall between the 1st and 2rd quartiles? 1. 0% 2. 25% 3. 50% 4. 75% 5. 100%