Please explain me easy way only no 2 a and b # Statistical Probabilities and Distributions: Practice Problems## 1. Normal Distribution of Pressure Measurements in Capillary Tubes**Scenario:**A measurement in the pressure drop for the ends of capillary tubes shows that the pressures follow a normal distribution with an average value (mean) of 130 pounds per square inch (psi) and a standard deviation of 4 psi.**Problems:**a) What percent of the pressures are below 121 psi?b) What percent of the pressure readings lie between 121 and 134 psi?## 2. Lifetime Probability Estimates for a General Population**Scenario:**It is estimated that 3.5% of the general population will live past their 90th birthday. Given a graduating class of 753 high school seniors:**Problems:**a) What is the probability that 30 or more will live beyond their 90th birthday?b) What is the probability that more than 40 will live beyond their 90th birthday?## 3. Exponential Distribution of Generator Operational Time**Scenario:**The time (in hours) during which an electrical generator is operational follows an exponential distribution. The average operational time is given as 160 hours.**Problem:**If the average operational time is 160 hours, what is the probability that a generator of this type will be operational for a duration between 60 and 160 hours?---### Graphs and Diagrams:* **Explanation:**If there are any graphs or diagrams related to normal distribution or exponential distribution, they typically illustrate: * **Normal Distribution Graph**: A bell-shaped curve centered at the mean value (130 psi). The area under the curve represents the total probability, with different segments showing probabilities for specific ranges. * **Exponential Distribution Graph**: A decreasing exponential curve that starts at a maximum value and approaches zero as time increases. This visual aids in understanding the probability of the generator’s operational time within a given range.---### Navigation:* **Previous**: A button to navigate to the previous page.* **Next**: A button to navigate to the next page.These problems provide practical applications of normal and exponential probability distributions, offering hands-on practice for students studying these concepts in statistics and probability courses.

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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 22PFA

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5/ Statistics.set.2 / 8 Previous Problem Problem List Next Problem Statistics.set.2: Problem 8 (1 point) Suppose the heights of men are normally distributed with mean, = 68.5 inches, and standard deviation, σ = 6 inches. Suppose admission to a summer basketball camp requires that a camp participant must be in the top 35 % of men's heights, what is the minimum height that a camp participant can have in order to meet the camp's height admission requirement? answer: Preview My Answers Submit Answers You have attempted this problem 0 times. You have unlimited attempts remaining. 40 5 6 R V G B Y I Search inches A+ 201 8 2 L N M K melp 41 DDI PRI SC 9 0 P L
G/ Statistics.set.2 / 10 Previous Problem Problem List Next Problem Statistics.set.2: Problem 10 (1 point) IQ scores have a mean of 100 and a standard deviation of 15. Mike has an IQ of 109. (a) What is the difference between Mike's IQ and the mean? Answer: (b) Convert Mike's IQ score to a z-score. Answer: Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 0 times. You have unlimited attempts remaining. Page generated at 04/14/2024 at 12:56pm CDT WeBWorK 1996-2022) theme: math4-yellow | ww_version: 2.17 | pg_version 2.17 The WeBWork Q Search Li
Psychology students in the Izmir University of Economics completed the Dental Anxiety Scale questionnaire in 2020. In this study, scores on the scale range from 0 (no anxiety) to 20 (extreme anxiety). The mean score was 14 and the standard deviation was 3.5. Assume that the distribution of all scores on the Dental Arociety Scale is normal with u= 14 and o =3.5. Complete parts a through c A Click here to view a table of areas under the standardized normal curve A Table of Normal Curve Areas a. Suppose you score a 18 on the Dental Aniety Scale. Find the z-value for this score. z= (Round to the nearest hundredth as needed) b. Find the probability that someone scores between 13 and 18 on the Dental Anxiety Scale. P(13sxs 18) =O (Round to four decimal places as needed ) c. Find the probability that someone scores above 17 on the Dental Anxiety Scale Pix> 17) =D (Round to four decimal places as needed.) Enter your answer in each of the answer boxes 男明國 1 1 网解 8 1101 |8 与的 O
Two distributions of data are being analyzed. Distribution A has a mean of 125 and a standard deviation equal to 50. Distribution B has a mean of 10 and a standard deviation equal to 2.0. Based on this information, use the coefficient of variation to determine which distribution has greater relative variation. Choose the correct answer below. A. Distribution B has greater relative variation since its coefficient of variation is greater than distribution A's. B. Distribution A has greater relative variation since its coefficient of variation is less than distribution B's. C. Distribution B has greater relative variation since its coefficient of variation is less than distribution A's. O D. Distribution A has greater relative variation since its coefficient of variation is greater than distribution B's.
Chance errors are errors related to the variability in repeated measurements and change from measurement to measurement, sometimes up and sometimes down.True or false: If we increase the number of measurements taken, the long-run average of repeated measurements should give the exact value of the thing being measured. True: Chance errors and bias can both be reduced by increasing the number of measurements taken. True: Assuming there is no bias in the measurement procedure, the chance errors should cancel out. False: Chance errors can only be reduced by carefully selecting the measurements that are not outliers. False: Chance errors are inevitable and cannot be reduced no matter how many samples are taken.
I need Parts D and E.
Shelia's doctor is concerned that she may suffer from gestational diabetes (high blood glucose levels during pregnancy). There is variation both in the actual glucose level and in the blood test that measures the level. In a test to screen for gestational diabetes, a patient is classified as needing further testing for gestational diabetes if the glucose level is above 120 milligrams per deciliter (mg/dL) one hour after a sugary drink. Shelia's measured glucose level one hour after the sugary drink varies according to the Normal distribution with μ = 105 mg/dL and σ = 15 mg/dL. (Round your answers to four decimal places.) (a) If a single glucose measurement is made, what is the probability that Shelia is diagnosed as having gestational diabetes?(b) If measurements are made on three separate days and the mean result is compared with the criterion 120 mg/dL, what is the probability that Shelia is diagnosed as needing further testing for gestational diabetes?
Investigation 3.1: Valence Differences Between R&B and Rap Genres (Independent) A music fan claims that R&B songs and Rap songs differ in terms of their positivity. The individual collected two independent random samples from the population of all songs on Spotify. Fifteen R&B songs and another fifteen Rap songs were collected and their Valence was recorded. Remember, the variable Valence is measured on a 0 to 1 scale. Songs with high valence sound more positive (e.g. happy, cheerful, euphoric), while songs with low valence sound more negative (e.g. sad, depressed, angry). We will subtract (R&B – Rap) and use the 10% significance level. Assume the Central Limit Theorem conditions hold. The data set is called RBRapSample31. Please import the data set into Rguroo or find it in our group. a) Define the population parameter in context and symbols in one sentence. b) State the hypotheses you would use to test the claim that a difference exists in the mean Valence between R&B and Rap songs…
vv.
A researcher takes a sample of 150 employees of a company, the average age of company’s employees is an example of a parameter. True O False The ordinal-level data are always quantitative in nature. True O False
Scenario #1. Part I. The population mean of American women is 70 inches with a and a standard deviation of 3 inches. Find the Z Score for a female how is 71.5 inches tall. Shade the larger proportion (Body) of the distribution. Identify the values: μ= σ= X= Use the Z-score formula to solve for Z. Show your work. z= Find the Z value location. Shade the larger proportion (Body) of the distribution.
Investigation 3.1: Valence Differences Between R&B and Rap Genres (Independent)A music fan claims that R&B songs and Rap songs differ in terms of their positivity. Theindividual collected two independent random samples from the population of all songs onSpotify. Fifteen R&B songs and another fifteen Rap songs were collected and their Valence wasrecorded. Remember, the variable Valence is measured on a 0 to 1 scale. Songs with highvalence sound more positive (e.g. happy, cheerful, euphoric), while songs with low valencesound more negative (e.g. sad, depressed, angry). We will subtract (R&B – Rap) and use the10% significance level. Assume the Central Limit Theorem conditions hold. The data set iscalled RBRapSample31. Please import the data set into Rguroo or find it in our group. Data Set: Track_Name Track_Artist Genre Valence Danceability What Are You Doing New Year's Eve? - Remastered Nancy Wilson r&b 0.397 0.311 Lowlife ONEFOUR r&b 0.383 0.32 Deep End…

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