The Bureau of Labor Statistics provides compensation information on and services for various positions. As of May 2012, the average salary for a budget analyst in a midwestern state was $72,560. Suppose the standard deviation is $9,800. A study gathered salary information on a randomly-selected sample of 100 budget analysts. a. Find the probability that the mean of the sample is between $71,000 and $74,500. b. Find the probability that the mean of the sample is greater than $75,000.

Q: An economist uses the price of a gallon of milk as a measure of inflation. She finds that the…

A: Given n=40 Mean, μ=$3.62Sd, σ=$0.33

Q: In a random sample of 60 computers, the mean repair cost was $150 and assume that the population…

A: Given Information: Sample size n=60 Sample mean x¯=150 Population standard deviation σ=36 Required:…

Q: First round the numbers 7887 and 7009 to the nearest hundred. Then use this to estimate the…

A:

Q: The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation…

A: (a)   Obtain the probability that pregnancy will last 307 days or longer. The probability that…

Q: 2. Reflect a. If all the data in a given sample are the same, what is the standard deviation of the…

A: Standard deviation : The standard deviation is that the live of variability. It tells United States…

Q: A Student Gender Hours online/week Friends 1 male 2 female 50 L30 3 female 4 female 70 2.

A: Given: The data given is as below Hours online/week Friends 4 90 2 50 2 30 5 70 5 70…

Q: 5. According to the Boston Globe in 2012, a typical college student graduated with $27,200 of debt.…

A: The mean is $27,200 and the standard deviation is $25,000.

Q: Michelle, a telemarketer makes six phone calls per hour and is able to make a sale on 30% of these…

A: The random variable X is making sales. The number of cars per hour is 6. The probability of making a…

Q: b. For a sample of engineers, the mean salary is $95,000 with a standard deviation of S30,000. The…

A: Given data: The mean of salary is m = $95000. The standard deviation is σ = $30000. The median…

Q: a) Does this affect the average? If so, by how much? b) Does this affect the median? If so, by how…

A: An investigator has a computer file showing family incomes for 100 subjects in a certain study.…

Q: Given a mean of 24.5 and a standard deviation of 1.7, within how many standard deviations of the…

A: A mean of 24.5 and a standard deviation of 1.7

Q: A company had 15 employees whose salaries are shown below. Find the standard deviation $7,500…

A: Salaries(x) of given 15 employees, so n=15 x x2 7500 56250000 15500 240250000 26400…

Q: places. ple of 50 male graduates will provide a sample mean within $1.00 of the population mean,…

A:

Q: Refer to the accompanying​ table, which describes the number of adults in groups of five who…

A: From the provided information, x P (x) 0 0.171 1 0.364 2 0.316 3 0.113…

Q: a. Approximately % of healthy adults in this group have body temperatures within 3 standard…

A:

Q: L What measure should you use to determine what most likely be the probability of an event to…

A: 1. For determining the most likely be the probability of an event to happen is the variance of…

Q: If the mean of a list of numbers is 16.7 and the standard deviation is 0,

A: Mean is a measure of central tendency. It is one of the most important measures to find out around…

Q: There are 12 employees in a particular division of a company. Their salaries ha a median of $48,000,…

A: Given: Mean salary of 12 employees = $ 65,000 Median salary of 12 employees = $ 48,000 Standard…

Q: Suppose the distribution of yearly car repairs cost has a normal distribution with a mean of $400…

A: Determine the mean repair cost that bounds the top 18% of car repair costs. The mean repair cost…

Q: The systolic blood pressure of 18-year-old women is a roughly bell-shaped distribution with a mean…

A: We have given that.   X~N( μ , ?^2 )   μ =120 , ? =12   Z-score =( x - μ )/?

Q: Is it worth pursuing a doctoral degree in education if you already have an undergraduate degree? One…

A: Let Population 1 be the salaries for people with doctoral degrees and Population 2 be the salaries…

Q: 2. Assume that, among residents of a large (over 6,000) Florida subdivision, the population mean age…

A: From the given information, The mean age is 65 and standard deviation is 2 years.

Q: The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the…

A: PART A SOLUTION:Step 1: Determine What is AskedWe are given that the mean score for U.S. college…

Q: As of 2020, 83 pitchers have been inducted into the Major League Baseball Hall of Fame. The…

A: Let X be the number of winning games played. Here, X~N( 250, 832) X~N(250,832)⇒Z=X-25083~N(0,1) a.)…

Q: The Economic Policy Institute periodically issues reports on worker's wages. The institute reported…

A: "Since you have posted a question with multiple subparts we will provide solutions only to the first…

Q: Is it worth pursuing a doctoral degree in education if you already have an undergraduate degree? One…

A: We have given that  Sample sizes n1= 12 , n2= 17 Sample means xbar1= 46500  Xbar2= 45000 Standard…

Q: A study by the National Center for Health Statistics suggested that women between the ages 20 and 29…

A: The objective of this question is to find the proportion of women between the ages of 20 and 29 in…

Q: In the question below, do 50 minutes imply the mean of the population or the mean of the sample?…

A: The derived numerical characteristic that explains the average (or mean) at the population level can…

Q: . Defective DVDS From past experience, a company found that in cartons of DVDS, 90% contain no…

A:

Q: Please explain how to solve the following:   The Aluminum Association reports that the average…

A: we are suppose to answer three sub parts .

Q: a population consistas of all the weights of all defensive tackles on sociaable university football…

A: From the provided information, The data is as follow: 204, 215, 207, 212, 214 and 208 pounds The…

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.