A study was conducted by a team of college students for the college research center. From the study, it was reported that most shoppers have a specific spending limit in place while shopping online. The reports indicate that men spend an average of $230 online before they decide to visit a store. If the spending limit is normally distributed and the standard deviation is $19. Find the probability that a male spent exactly $250 online before deciding to visit a store. Ninety-one percent of the amounts spent online by a male before deciding to visit a store are less than what value?

Q: Public health statistics indicate that 26% of  American adults smoke cigarettes. A random sample of…

A:

Q: A business school dean in Ohio wants to know if graduates who completed an internship during their…

A: Sample size = n = 1500 Sample mean = m = 50,970 Sample SD = s = 12,976  The average alumni who…

Q: The mean value of land and buildings per acre from a sample of farms is $1500, with a standard…

A: The mean is 1500 and the standard deviation is 300.

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: As the sample size             , the standard deviation of ?¯x¯             . increases; decreases…

A: The formula for sample standard deviation can be written as:

Q: Micheal invested $2000 in a certain stock. At the end of the year the stock could be worth $1600,…

A: Given: Micheal invested $2000 in a certain stock. At the end of the year the stock could be worth…

Q: expected number of students who read the book online.

A: Students purchased hard copy =P(H) = 60% =0.60 Students print out from the web =P(W)= 25% = 0.25…

Q: The average price of a college math textbook is $168 and the standard deviation is $20. Suppose that…

A: The average price of a college math textbook is $168 and the standard deviation is $20. Suppose that…

Q: The Bureau of Labor Statistics provides compensation information on and services for various…

A:

Q: A study found out that for a particular area, the average income per family is $24596 and the…

A: Solution

Q: The average daily points for my fantasy baseball team are {4.1, 5.7, 3.8, 4.7, 4.7, 5.5, 4.1, 2.7,…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: Apartment cost. The average cost of an apartment in the Cedar Lakes development is $62,000 USD with…

A: Average cost of an apartment μ(μ) in Cedar Lakes: $62,000 USDStandard deviation σ(σ) of apartment…

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: The owner of a minor league baseball team pays the nine starting​ players, the​ manager, and two…

A: x (x-xbar)^2 70 16900 100 10000 135 4225 175 625 185 225 190 100 205 25 210 100…

Q: A car salesperson offers you a car at the price of $22,895. You look up the mean sales price for…

A: We have given that the random variable X that is sales price. Here, X = 22895 Mean = 21900 and…

Q: In a normal distribution, 11% of the items are under 35 and 76% are under 83. Find the mean and…

A:

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: The summary data from study demonstrates a stronger relationship between how many minutes per day a…

A: Given : A standard deviation is a measure of how dispersed the data is in relation to the mean. Low…

Q: A study has shown that 15% of all college textbooks have a price of $178.52 or higher.  It is known…

A: From the provided information Standard deviation (σ) = $32.55 Let X be a random variable which…

Q: Of the 500 people who took the civil servant acceptance test in one government agency, the average…

A: We have given that  Mean=67.5 Standard deviation=5.2  Find A) P(55.6<x<61)B) P(x>65)

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: The average McDonald's restaurant generates $3.2 million in sales each year with a standard…

A:

Q: A group of friends, on average, had $300 in their wallets, with a standard deviation of $50.…

A: It is given that the mean and standard deviation are $300 and $50, respectively.

Q: As reported in Runner's World magazine, the times of the finishers in the New York Cit km run are…

A:

Q: The average amount of snow per year in Whiteville is 32 inches. The standard deviation is 4 inches.…

A:

Q: Tires that wear out bynothing miles will be replaced free of charge.

A: Solution:

Q: The salary for workers at a company are normally distributed with a mean of $60,000 and a standard…

A:

Q: The amount that people pay for their cellphone service is normally distributed with a mean of $136…

A:

Q: A nutritionist conducted a study on the eating patterns of early adolescent boys and girls. Calorie…

A: GivenFor boysThe mean calories per day =3300standard deviation =790 For girlsThe mean calories per…

Q: The percent fo Coloradans that own a Subaru is 56%. If you were to take a random sample of size 70,…

A: We have given that,  Let X be the random variable from binomial distribution with probability (p) =…

Q: A professor using an open-source introductory statistics book predicts that 60% of the students will…

A: given data, 60% - student will purchase a hard copy of the book,25%- will print it out from the…

Q: The average teacher's salary in a particular state is  $54,194 . If the standard deviation is…

A:

Q: The lengths of pregnancies are normally distributed with a mean of 270 days and a standard deviation…

A: We have given that.  Mean = 270 , Standard deviation = 15 , We need , Part (a): p(x greater than…

Q: Salaries for teachers in a particular elementary school district are normally distributed with a…

A: Given information- Population mean, µ = $45,000 Population standard deviation, σ = $6,200 Sample…

Q: Suppose that we know that 33.8% of the people born in the United States between 1936 and 1951 have…

A:

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.