SOLUTION: A local survey found that families of 5 spend, on average $167.45 in groceries a week. Assume the standard deviation is $23.78. Find the percentage of families that spend over $190

Question 1056716: A local survey found that families of 5 spend, on average $167.45 in groceries a week. Assume the standard deviation is $23.78. Find the percentage of families that spend over $190.00 a week on groceries. Assume the variable is normally distributed. Choose the correct value:

1.) 7.11%
2.) 1.17%
3.) 17.11%
4.) 11.17%
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
z=(190-167.45)/23.78=0.948
probability z>0.948 is 0.1715
3 is closest.
RELATED QUESTIONS
A consumer survey indicates that the average household spends μ =$155 on groceries... (answered by Boreal)

Could someone help me with this? A study found that citizens spend on average $1950... (answered by JulietG)

The weekly amounts that a family of four spends on groceries are normally distributed.... (answered by Theo)

A Food Marketing Institute found that 26% of households spend more than $125 a week on... (answered by Boreal)

A company that has a large number of supermarket grocery stores claims that customers who (answered by Boreal)

The U.S. Bureau of Labor Statistics reports that the average annual expenditure on food... (answered by CPhill)

A survey found that an american family generates an average of 24lb of glass garbage each (answered by ewatrrr)

Can someone show me how to solve these problem below using the Central Limit Theorem?... (answered by rothauserc)

A department store management claims that families spend an average of $630 on gifts... (answered by stanbon)