SOLUTION: A restaurant owner has researched his daily sales over the past year and found the mean daily sales to be $850, with a standard deviation of $325. Based upon the restaurant owner's

Question 388055: A restaurant owner has researched his daily sales over the past year and found the mean daily sales to be $850, with a standard deviation of $325. Based upon the restaurant owner's analysis:
a. what percent of daily sales are less than $600?
b. what percent of daily sales are between $700 and $1000?
c. what percent of sales are between $1000 and $1200
d. what amount of sales separates the top 10 percent from the lower 90 percent?

Any hlep will be greatly appreciated... I will do the $5 donation if this can be completed by today at 7CST. Thank you in advance
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Find the z scores.

a)
Now find
.
.
.
b)

.
.
.
c)

.
.
.
d)
Working backwards, find the z score that give

Now find the x value that gives you that z score.

Now solve for .

RELATED QUESTIONS
The daily sales of a product in different shops follow a normal distribution. The... (answered by Boreal)

� � � �6. The daily sales by Hank�s Hot Dogs have a mean of $572.50 and a standard... (answered by ewatrrr)

a year ago, the daily sales of a newspaper averaged 16 320.Now the average daily sales... (answered by ikleyn)

a year ago, the daily sales of a newspaper averaged 16 320.Now the average daily sales... (answered by ikleyn,KMST)

Fast-food restaurant located in Dubai in half-pound hamburgers, fish sandwiches, and... (answered by math_tutor2020)

A fast food restaurant sells 200 Megaburger combos daily at $4.59 each. Every 10 cents... (answered by greenestamps)

The owner of a computer repair shop has determined that their daily revenue has mean... (answered by ewatrrr)

A restaurant wants to assess its profit for a specific day. On that day, the restaurant... (answered by josgarithmetic)

ANOVA: Degrees of freedom and the F statistic Cris Turlock owns and manages a small... (answered by stanbon)