The average house price in a country in 2010 was $339,100, according to a real estate organization. Today, a consumer group randomly selected a sample of 35 house prices and found an average price of $421,320 with a standard deviation of $93,200. The group put out a press release saying "House prices have gone up by over 20% compared with 2010." Test this claim using a 95% level of confidence.

Q: According to a magazine, people read an average of more than three books in a month. a. To test the…

A: Given,   Sample size = 25 Sample mean = 2.9 Sample standard deviation = 1.26

Q: An advertising agency has stated that 20% of all television viewers watch a particular program. How…

A: From the provided information, An advertising agency has stated that 20% of all television viewers…

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: statistics professor reported that the mean score in a recent quiz is 72 and the standard deviation…

A: Solution

Q: video game c

A: given, sample size(n) = 1500 sample mean (x̄) = 115 sample stadard deviation (s) = 11

Q: Disney has studied its movie customers to determine how much money they spend on their movies. The…

A:

Q: A researcher collected data from Boston police officers and found that on average they spent 14.3…

A: From the provided information, Mean (µ) = 14.3 Standard deviation (σ) = 3.2

Q: A market research firm reported that the mean annual earnings of all family practitioners in the…

A:

Q: In a study of Ridge View's boys' basketball team, the average height is 68 inches and standard…

A: Given, mean =μ=68Standard deviation = 4x = 78

Q: mandatory competency test for high school sophomores has a normal distribution with a mean of 329…

A:

Q: In one town, the number of pounds of sugar consumed per person per year has a mean of 6 pounds and a…

A: In one town, the number of pounds of sugar consumed per person per year has a mean of 6 pounds and a…

Q: The mean height of males 20 years old or older is 69.1 inches with a standard deviation of 2.8…

A: given data x = height of 20 years old or older μ = 69.1  inchesσ = 2.8 incheskevin's height,x = 83…

Q: Nationally, the per capita monthly fuel oil bill is $110. A random sample of 36 cities in the…

A: Let μ denotes the population mean per capita monthly fuel oil bill. The national per capita monthly…

Q: The average McDonald's restaurant generates $2.2 million in sales each year with a standard…

A: The random variable sales follow normal distribution. We have to test whether the average sales…

Q: A recent study found that 69% of all adults over 50 wear sunglasses for driving. In a random sample…

A: Formula : Mean = np Standard Deviation  :

Q: Professor Ivy’s students have a Mean grade of 69.5 and a Standard Deviation of 6.5.  If Johnny has…

A: From the provided information, Mean (µ) = 69.5 Standard deviation (σ) = 6.5 Let X be a random…

Q: A newspaper article reported that people spend a mean of 6.5 hours per day watching TV, with a…

A: Given data ,μ=6.5σ=2.0Pz>z=10 %

Q: The average McDonald's restaurant generates $3.1 million in sales each year with a standard…

A: The random variable sales generated by McDonald’s restaurants in Maryland follow normal…

Q: A company has rolled out a new process for sales people to use. They were able to go back into the…

A: Given, We are given that, Population mean = μ = $108 Population Standard devation = σ = $12 Sample…

Q: A student earned a 79 on a precalculus exam, and she earned a 92 on a statistics exam. The…

A: Answer:- Given, The precalculus exam had a mean score (µ) =72.3 with a standard deviation (σ) = 8.4.…

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

A: 0.33271Explanation:For the given normal distribution with μ=26.8 and σ=7.4, the required proportion…

Q: A study states that for a particular area, the average income per family is $34,569 and  the…

A: Mean =$34,569 Standard deviation =$8256

Q: A person in the U.S. eats about 25 pounds of M&M's per year with a standard deviation of 3 pounds.…

A: Solution: Given  μ= 25 Pounds  Population meanσ= 3 Pounds Population standard deviations Assumed…

Q: A random sample of 120 cars in the drive-thru of a popular fast food restaurant revealed that the…

A: Given: n=120,x=29.27,σ=6.17,α=1-0.82=0.18

Q: A public health survey was carried out to estimate the total number of alcohol bottles consumed by…

A: Given that, μ=16,σ=4 1) The proportion of the people to consume fewer than 12 bottles a week is,

Q: A successful basketball player has a height of 6 feet 11 ​inches, or 211 cm. Based on statistics…

A:

Q: A survey found that the average hotel room in New Orleans is $88.42 and the average room rate in…

A:

Q: A researcher in Des Moines, Iowa sampled 56 households and found the mean number of puppies per…

A: # sample size n=56  population mean mu=3.03  standard deviations=1.5  then to find 62nd percentile…

Q: A successful basketball player has a height of 6 feet 3 ​inches, or 191 cm. Based on statistics from…

A: Given,a basketball player has a height of 6 feet 3 inchesand the Z-score =2.31

Q: A successful basketball player has a height of 6 feet 4 ​inches, or 193 cm. Based on statistics from…

A: