2. 1Q scores tend to be normally distributed with a mean of100 and a standard deviation of 15. What is theISpercentage of people that have an IQ score:a) Greater than 100b) Between 85 and 130c) Less than 90d) Between 90 and 110

In question, we have given IQ score is distributed normally with mean of 100 and standard deviation…

2. IQ scores tend to be normally distributed with a mean of 100 and a standard deviation of 15. What is the pereentage of people that have an IQ score: a) Greater than 100 b) Between 85 and 130 c) Less than 90 d) Between 90 and 110

2. IQ scores tend to be normally distributed with a mean of 100 and a standard deviation of 15. What is the pereentage of people that have an IQ score: a) Greater than 100 b) Between 85 and 130 c) Less than 90 d) Between 90 and 110

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

Related questions

Q: Find the mean deviation about median

A: Here given frequency distribution of height

Q: 2. Suppose that the people living in a particular city were found to have a mean score of 40 and a…

A: People living in particular city were found to have a mean score of 40 and standard deviation as 5,…

Q: Assume the average price of a laptop computer is $750 with a standard deviation of $75. The…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 250.1…

A: Empirical rule : According to empirical rule , 68% of data falls within the first standard…

Q: c) How many of the 15 data values fall within one standard deviation of the mean? Show how you found…

A: According to empirical rule, 68% of the data lie within 1 standard deviation of the mean. Thus, if…

Q: Assume that songs the lengths of songs released in 2020 are normally distributed with a mean of 210…

A: (a) Determine the percentage of songs that were less than 150 seconds.…

Q: In the 1980s, a research study linked drinking coffee to a higher risk of heart disease and pancreat…

A: Introduction: A confounding variable in a study is a variable that is not acknowledged or controlled…

Q: . The annual salaries of employees in a large company are approximateley normally distributed with a…

Q: A histogram is used to understand:

A: Histogram describes the frequency of the data using bars.

Q: 5. The lengths of walleye in a lake are normally distributed with mean 21 inches and standard…

Q: 10. The appropriate p-value to know whether the mean weight loss differs among the three diets is A.…

A: The question is about ANOVA Introduction : ANOVA is a parametric test which is used to check whether…

Q: A) For the data in Table 1 below, how many standard deviations from the mean is a run length of 20…

A: The given data table is Female hamsters Run lengths Male hamsters Run lengths 1 2 1 3 2 6 2 4…

Q: Convert the following to z-score: a. Raw score of 100; mean of 60; SD of 15 b. Raw score of 95; mean…

A: Z=x-µσ This is the formula for z-score. x= raw score µ= mean σ= standard deviation (SD)

Q: In order to estimate the average time spent per student on the computer terminals at a local…

A: sample size(n) = 81population standard deviation = 1.5 hoursstandard error for mean = ?

Q: 10. The mean life of a certain tire brand is 47,500 miles with standard deviation of 3,600 miles. a.…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: The scores on an aptitude test are normally distributed with a mean of 18 and standard deviation of…

A: Note: Hey, since there are multiple subparts are posted, we will answer first three subparts for…

Q: 30. The mean and the standard deviation for a data set are 20 and 5 respectively. Then the…

A: Mean()=20standard deviation()=5x=17

Q: A researcher counted the number of Saturday calls to emergency dispatch for a year. The data set is…

A: The normal distribution has bell shape curve which is symmetric about the mean of the distribution.…

Q: The Finnish Tax Administration reported the average refund in 2022 was $2,878 with a standard…

Q: The Scholastic Assessment Test (SAT) is standardized to be normally distributed with a mean of 500…

A: Hey there! Thank you for posting the question. Since your question has more than 3 sub parts,…

Q: Show your work to find the value that is 1.5 standard deviations: a. above the mean. b. below the…

A: From the obtained results, the mean is 9.02 and the standard deviation is 5.7910.

Q: Which of the following exam scores is better relative to other students enrolled in the course? A…

A: The exam grade, mean grade, and standard deviation for three exams are given.

Q: Assume mean and standard deviation of monthly expenses of households (in a city) are $210 and $40.…

A: μ=210σ=40130=210-240290=210-240∴k=2

Q: Salaries at a company are normally distributed with a mean of $31000 and standard deviation $5000.…

A: Given that

Q: e) Compare part a to part b: i. What happens to the mean when the dataset is shifted by 3? ii. What…

A: Normal data : 1,2,3,5,5 When data shifted by 3 : Data will be : 4,5,6,8,8 When data…

Q: 26. Which of the following is a measure of position? A. Median B. Standard Deviation C. Five-number…

A: Measure of position

Q: 4. A numerical measure from a population, such as a population mean, is called a.…

A: Ans- A numerical measure from a population, such as a population mean, is called

Q: 1. A Statistics class of 50 students has a mean test score of 38 with standard deviation of 5. a.…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: The mean of a set of data is 23.5 with a standard deviation of 3.1. a. What does a z-score of -2…

A: Solution-: Given: μ=23.5,σ=3.1 We find, (a) what does a z-score of -2 mean for a given point? (b)…

Q: Having the data values listed in order from smallest to largest is helpful in finding which of the…

A: Median: It is a value that lies in the middle of data arranged in ascending or descending order.…

Q: 2. In a departmental examination on statistics, the mean grade was 64 and the standard deviation was…

A: Determine the number of students took the examinations. The number of students took the…

Q: with peas having the property that for offspring, the offspring peas are randomly selected in groups…

A: Hello. Since your question has multiple parts, we will solve first question for you. If you want…

Q: 1. A class had a quiz in Statistics. The scores of the students has a mean of 87 and standard…

A: Given,mean(μ)=87standard deviation(σ)=3

Q: IQ scores have a bell-shaped (mound shaped) distribution with a mean of 100 and a standard deviation…

A: Note: Hi there! Thank you for posting the question. As there are multiple different questions,…

Q: A. What proportion of people would score below 88 on the memory test? B. What is the percentile rank…

A: Given : Mean=100 Standard deviation =10 Note :As per guidelines only first 3 subparts have been…

Q: Fifteen randomly selected college students were asked to state the number of hours they slept the…

A: Comment: As per the our company guidelines we are supposed to answer only three subparts. Kindly…

Q: The blood cholesterol levels of men age 55 to 64 are approximately Normal, with mean 222 milligrams…

Q: If some data is symmetrical and unimodal, and the mean and standard deviation are 230 and 40…

A: If the data is symmetrical and unimodal, then it is normally distributed with mean, μ=230 and…

Q: Identify the score corresponding to the indicated percentile. IQ scores are known to be normally…

A: The mean is 100 and the standard deviation is 15.

Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

2. 1Q scores tend to be normally distributed with a mean of
100 and a standard deviation of 15. What is the
IS
percentage of people that have an IQ score:
a) Greater than 100
b) Between 85 and 130
c) Less than 90
d) Between 90 and 110

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Point Estimation, Limit Theorems, Approximations, and Bounds$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions

4. The lowest and the highest data value of a data set are 12 and 28 respectively, then the approximate standard deviation is:
5. Interpret the location (how many standard deviations), direction (above or below the mean), and distance (near or far) of the following z-scores: a) -2.00 b) 1.25 c) 3.50 d) -0.34
Compute the Median and seventh Decile of the following distribution of height: Heights (inches) 57.5 -, 60.0 -, 62.5 -, 65.0 -, 67.5 -, 70.0 -, 72.5 -, Number 6 26 190 281 412 127 38
Please answer the following three multiple choice questions :) Summarized below are data for a study to see if hours of sleep per day for med and non-med students are the same: n x¯ s med students 25 5.8 0.83 non-med students 32 6.3 1.39 1. Find the test statistic (assume unequal standard deviation) A. -15.44 B. -5.69 C. -1.69 D. -1.81 2. Let tstat represent the value of the test statistic from the previous question. The degrees of freedom for the test are df = 52. To test the claim that the mean hours of sleep for med and non-med students is different, the P-value is calculated as: A. 2*pt( tstat, df=52, lower.tail = TRUE) B. 2*pt( tstat, df=52, lower.tail = FALSE) C. pt( tstat, df=52, lower.tail = TRUE) D. pt( tstat, df=52, lower.tail = FALSE) 3. The correct P-value is 0.098. At α = 0.05, we A. reject H0. The claim that means are different is not supported. B. reject H0. The claim that means are different is supported. C. fail to reject…
38)
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?
The average weekly salaries (in dollars) earned by teachers in 1994 are given below for five European countries. Country Weekly Salary France $1,213 Germany $1,752 Greece $824 Ireland $1,101 Italy $1,006 a) What is the range for salaries? b) What is the standard deviation of the salaries
7.
2. At the general hospital, the waiting times (in minutes) before seeing the doctor were recorded. A sample of 10 patients was surveyed recently and their waiting times are shown below: 13 15 23 22 19 16 23 17 18 25 Calculate the mean, standard deviation and coefficient of variation.
Which is NOT a correct statement about mean, median, standard deviation, or interquartile range? a. Mean is more affected by changes in extreme observations b. Median is less affected by changes in extreme observations c. Standard deviation is less affected by changes in extreme observations d. Interquartile range is less affected by changes in extreme observations
9. Which measures aren’t resistant? (more than one could be correct) a. mean b. median c. IQR d. Standard deviation e. range f. coefficient of correlation
Suggest set of data between 15 and 30, and:- a. Find the mean value. b. Calculate the following: ii) Variance = iv) Standard deviation = of