You work at a job where your average monthly earnings are $626 with a standard deviation of $37. Your mean monthly expenses are $255 with a standard deviation of $18. Assume that the your monthly earnings and expenses are independent. You put any extra money that you have at the end of the month into your savings account. What is the mean of the amount of money you put in your savings account each month?    What is the standard deviation of the amount of money you put in your savings account each month?

Q: Describe the properties of range, mean deviation, and standard deviation.

A: Properties of range:- 1.) The value of range is always non-negative. (either positive or equal to…

Q: A data set is normally distributed with a mean of 67 and a standard deviation of 12. What percent of…

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

Q: Test scores for a history class had a mean of 89 with a standard deviation of 8.9. Suppose a student…

A: According to the given information, we have Mean = 89 Standard deviation = 8.9 Raw score = 67

Q: Salaries paid for all workers last year had a mean of $45,000 amd a standard deviation of %5,500.…

A:

Q: A vending machine dispenses coffee into a twelve-ounce cup. The amount of coffee dispensed into the…

A: Vending machine dispenses coffee into a 12 ounce cupx=12standard deviation()=0.07

Q: You are a newsvendor selling San Pedro Times every morning. Before you get to work, you go to the…

A: The objective of this question is to determine the optimal number of newspapers to buy each morning…

Q: The accompanying data file shows monthly stock prices (in $) for Corporation A and Corporation B…

A: a-1.The data related to the stock prices for corporation A and corporation B is given.Enter the data…

Q: how do you calculate the mean and standard deviation without a calculator ?

A: In this question we have to tell that how to find the Mean and Standard deviation without using the…

Q: In the past, the value of houses a local realtor has sold is normally distributed with a mean of…

A: We have to find given score.

Q: You have a dataset with a mean of 50 and a standard deviation of 5. What is the coefficient of…

A: From the provided information, Mean (x̄) = 50 Standard deviation (s) = 5

Q: Refer to the information in the below chart. Find the mean and standard deviation of the total…

A: The mean involves all the observation in the sample or population, it is calculated by adding all…

Q: Suppose the amount newly married couples spend per week on groceries is normally distributed with a…

A: given data, normal distribution μ=65σ=4.3the amount (in dollars) spent on groceries representing the…

Q: The rainfall in a town last year measured 31 inches. If the annual rainfall has a mean of 48.89…

A:

Q: How many minutes did it take him to finish the face?

A: It is given that the distribution of finishing time for men was approximately normal with mean 242…

Q: ne table to the right lists the monthly price n dollars) of a pound of coffee and a allon of…

A: We have given that,  The data set of coffee prices are: Coffee prices (X) : 4.58, 4.16, 5.72, 4.56,…

Q: Last year, the mean salary of accounting clerks was $29932. If we assume that the annual salaries…

A: Given Data: Let X represent the random variable   X~ Normal (29932, 18502)

Q: Adult men have an average height of 69.0 inches with a standard deviation of 2.8 inches. Find the…

A: The objective of this question is to find the height of a man given the z-score, the average height,…

Q: Adult men have an average height of 69.0 inches with a standard deviation of 2.8 inches. Find the…

A: given data, μ=69.0σ=2.8height of a man with a z-score of -1.75 =?

Q: The table to the right lists the monthly price (in dollars) of a pound of coffee and a gallon of…

A: From the provided information, The table is as follow: Month Coffee Price $/lb Gasoline…

Q: ou find the standard deviation in the most easiest way?

A: The standard deviation is used to calculate the variability of the data set. It tells us about the…

Q: facing a shortage the student activity council decides to reduce funding for each of it's student…

A: Given : facing a shortage the student activity council decides to reduce funding for each of it's…

Q: Write down the formulas for the standard deviation of x.

A: The formula for the sample standard deviation can be written as: Here, n is the sample size and x̅…

Q: What are the best ways to find the standard deviation?

A: Standard deviation is a measure of variability. It describes how far the data falls from the…

Q: You are interested in the average dollar amount lost by burglary victims. The National Insurance…

A: From the provided information, Population standard deviation (σ) = 600 Sample mean (x̄) = 2222…

Q: On a standardized exam, the score are normally distributed with a mean of 300 and a standard…

A: X~N( μ , ?)   μ=300 , ?=25   Z-score =( x - μ )/?

Q: A recent survey revealed that an American's Christmas spending averaged $1,150. Suppose Americans'…

A: Given that, μ=$1150,σ=$310 Consider that 5% of Americans will spend more than this dollar amount on…

Q: The weekly mean income of a group of executives is $1,000 and the standard deviation of this group…

A:

Q: Suppose that replacement times for washing machines are normally distributed with a mean of 8.8…

A:

Q: What are the means and standard deviation of the list below.

A:

Q: The scores on the final exam in a statistics course are close to being normally distributed. The…

A: Normal distribution: It is a continuous probability distribution, that is bell-shaped with lighter…

Q: 1.2, 2.7, 5.3, 3.4, 4.1,4.6, 3.3, 2.6. Find the standard  deviation

A:

Q: A quantitative data set has mean 19 and standard deviation 2. Approximately what percentage of the…

A: Given that, A quantitative data set with, Mean = 19 Standard deviation = 2

Q: A mechanic sells a l a brand d of automobile tire that has a life expectancy that is normally…

A: The given data is as follows:Population mean, Population standard deviation,

Q: The average age of senators in the 108th Congress was 62 years. If the standard deviation was 12.5…

A: Solution: Let X be the age of senator. From the given information,

Q: Find the standard deviation of the following -14, -4,-10, -12, 5, -1.

A:

Q: from the

A: The standard deviation and average deviation,  are two of the most frequently used measures for…

Q: Gestation Periods of Humans. Gestation periods of humans have a mean of 266 days and a standard…

A: