Help Please Statistic
posted by Tikima
7. The table below shows the probability distribution of the types of food purchased by students from the school cafeteria. What is the probability a student has purchased Caesar salad?
(2 points)
0.17
Suppose houses are available for purchase during construction of a new housing development. Two different types of houses are being built: rancher and colonial. The mean price of the ranchers is $319,000 with a standard deviation of $12,000. The mean price of the colonials is $405,000 with a standard deviation of $18,500.
8. Find the combined mean price of the two different types of houses. (2 points)
$362,000
9. Find the combined standard deviation of the two different types of houses. (2 points)
$22,051.0771 or $22,051.08
10. The purchase price for the colonial houses is reduced by $10,000. What would be the new mean for the colonial houses? (2 points)
$357,000
11. If the purchase price for the colonial houses is reduced by $10,000, how much would the standard deviation for the colonial houses change? (2 points)
Respond to this Question
Similar Questions

Probability
Im not sure how to start here. Please help. The age distribution of students at a community college is given below. Age (years) Under 21 2125 2630 3135 Over 35 Number of students (f) 411 407 201 51 26 A student from the community … 
statistics and probability
It is known that an exam scores of students in STAT 2507 follow a normal distribution with a mean of 70% and a standard deviation of 9%. (A) If a student must obtain a mark of 50% to pass the exam, what proportion of students fail … 
statistics
In this summer school class there are 28 male students and 15 female students. An experiment is done that consists of selecting a student at random, and recording their gender. This is done 4 times WITH REPLACEMENT. 1) Fill in the … 
college Mathematics
I have been trying to figure this out for day's please help if you can. A survey of 59 customers was taken at a book store regarding the type of novels purchased. The survey found 34 customers purchased mysteries, 27 purchased science … 
****HELP**** STATISTIC
The table below shows the probability distribution of the types of food purchased by students from the school cafeteria. What is the probability a student has purchased Caesar salad? 
Stat
Suppose that a principal of a local high school tracks the number of minutes his students spend texting on a given school day. He finds that the distribution of minutes spent texting is roughly normal with a mean of 60 and a standard … 
Statistical work
Suppose that a principal of a local high school tracks the number of minutes his students spend texting on a given school day. He finds that the distribution of minutes spent texting is roughly normal with a mean of 60 and a standard … 
stat
** I already finish these questions Can you answer so I can compare my final answers w/ yours.** Suppose that a principal of a local high school tracks the number of minutes his students spend texting on a given school day. He finds … 
Stat
Does anyone know how to solve for this Suppose that a principal of a local high school tracks the number of minutes his students spend texting on a given school day. He finds that the distribution of minutes spent texting is roughly … 
Probability
CHECK ANSWERS PLEASE ********************************** Paula asked 30 students what they ate for lunch. All the students had at least a sandwich, salad or fruit. ********************************* QUESTION A Draw a Venn Diagram. * …