Annual Amount Spent on Organic Food = α +
b1Age + b2AnnualIncome
+ b3Number of People in Household +
b4Gender
After you have reviewed the results from the estimation, write a report to your boss that interprets the results that you obtained. Please include the following in your report:
Log(Annual Amount Spent on Organic Food) = α
+b1Age + b2Log(AnnualIncome)
+ b3Number of People in Household +
b4Gender
Annual Amount Spent on Organic Food | Age | Annual Income | Number of People in Household | Gender (0 = Male; 1 = Female) |
7348 | 77 | 109688 | 3 | 1 |
11598 | 47 | 109981 | 5 | 1 |
9224 | 23 | 112139 | 4 | 1 |
12991 | 38 | 113420 | 5 | 1 |
16556 | 58 | 114101 | 5 | 0 |
11515 | 44 | 115100 | 5 | 0 |
10469 | 34 | 116330 | 5 | 0 |
17933 | 75 | 116339 | 6 | 0 |
18173 | 32 | 117907 | 7 | 0 |
12305 | 39 | 119071 | 5 | 1 |
9080 | 65 | 58603 | 5 | 1 |
9113 | 48 | 58623 | 4 | 1 |
6185 | 48 | 61579 | 2 | 1 |
6470 | 49 | 62180 | 2 | 0 |
6000 | 57 | 62202 | 5 | 1 |
In: Math
An Olympic archer misses the bull's-eye 13% of the time. Assume each shot is independent of the others. If she shoots 9 arrows, what is the probability of each of the results described in parts a through f below? a) Her first miss comes on the fourth arrow. The probability is 9.8. (Round to four decimal places as needed.) b) She misses the bull's-eye at least once. The probability is 0.6731. (Round to four decimal places as needed.) c) Her first miss comes on the second or third arrow. The probability is nothing. (Round to four decimal places as needed.) d) She misses the bull's-eye exactly 3 times. The probability is nothing. (Round to four decimal places as needed.) e) She misses the bull's-eye at least 3 times. The probability is nothing. (Round to four decimal places as needed.) f) She misses the bull's-eye at most 3 times. The probability is nothing. (Round to four decimal places as needed.)
In: Math
28. A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 450 gram setting. It is believed that the machine is underfilling the bags. A 16 bag sample had a mean of 441 grams with a variance of 256. Assume the population is normally distributed. A level of significance of 0.05 will be used. Find the P-value of the test statistic. You may write the P-value as a range using interval notation, or as a decimal value rounded to four decimal places.
29. A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 447 gram setting. It is believed that the machine is underfilling the bags. A 31 bag sample had a mean of 445 grams with a variance of 441. Assume the population is normally distributed. A level of significance of 0.05 will be used. State the null and alternative hypotheses.
In: Math
Which of these situations fit the conditions for using Bernoulli trials? Explain. a) You are rolling 8 dice and need to get at least three 1s to win the game. b) We record the distribution of home states of customers visiting our website. c) A committee consisting of 8 men and 12 women selects a delegation of 5 to attend a professional meeting at random. What is the probability they choose all women? d) A study found that 58% of M.B.A. students admit to cheating. A business school dean surveys all the students in the graduating class and gets responses in which cheating was admitted by 322 of 549 students.
In: Math
In the description of the following experiment, determine the experimental factor. During a study testing a new vaccine for Zika virus, the research team grouped the volunteers enrolled for the test into Group A and Group B. Group A received an inert drug (placebo) while Group B received the vaccine.
Select the correct answer below:
whether or not a person contracts the Zika virus
the effectiveness of the new vaccine
the drug received by each group
the group receiving the new vaccine
In: Math
In: Math
This problem is also a Monte Carlo simulation, but this time in the continuous domain: must use the following fact: a circle inscribed in a unit square
has as radius of 0.5 and an area of ?∗(0.52)=?4.π∗(0.52)=π4.
Therefore, if you generate num_trials random points in the unit square, and count how many land inside the circle, you can calculate an approximation of ?
For this problem, you must create code in python
(B) Without drawing the diagram, calculate the value of ? you would get from 105 trials.
(C) After completing (B), try to get a more accurate value for ? by increasing the number of trials.The results will depend on your machine
In: Math
A simple random sample of size n=36 is obtained from a population with mean=89 and standard deviation = 6
(c) What is P ( x overbar less than or equal to 86.65)?
(d) What is P(88.5 < x overbar < 91.25)?
(a) Describe the sampling distribution of x overbar.
(b) What is P ( x overbar > 90.85 )?
In: Math
In: Math
PLEASE PROVIDE ANSWER
FOR DEDICATED QUEUES:
Burger Dome sells hamburgers, cheeseburgers, French fries, soft
drinks, and milk shakes, as well as a limited number of specialty
items and dessert selections. Although Burger Dome would like to
serve each customer immediately, at times more customers arrive
than can be handled by the Burger Dome food service staff. Thus,
customers wait in line to place and receive their orders. Suppose
that Burger Dome analyzed data on customer arrivals and concluded
that the arrival rate is 21 customers per hour and 1 customer
processed per minute.
Compare a multiple-server waiting line system with a shared queue to a multiple-server waiting line system with a dedicated queue for each server. Suppose Burger Dome establishes two servers but arranges the restaurant layout so that an arriving customer must decide which server's queue to join. Assume that this system equally splits the customer arrivals so that each server sees half of the customers. How does this system compare with the two-server waiting line system with a shared queue? Compare the average number of customers waiting, average number of customers in the system, average waiting time, and average time in the system. If required, round your answers to four decimal places.
Shared single queue | Dedicated queues | |
---|---|---|
Number of customers waiting | ||
Average number of customers in the system | ||
Average waiting time | minutes | minutes |
Average time in the system | minutes | minutes |
Comparing these numbers, it is clear that the shared or dedicated results in better process performance than the shared or dedicated?? .
In: Math
Andi and Budi will meet. Suppose A is an event where Andi arrives late, and B is an event where Budi arrives late, with P (A) = 0.1 and P (B) = 0.3. What is the chance the two of them will meet on time if
a. Genesis A and B are independent
(independent)?
b. P (B | A) = 0.5?
c. P (B | A) = 0.1?
In: Math
Say we have the following hypotheses
H0: μ <50
HA: μ > 50
We know that the population standard deviation is 8. If we collect a sample of 64 observations and want α = 0.05, calculate whether or not we reject the null for the following sample means: a.x̅=52.5
b.x̅=51
c.x̅=51.8
In: Math
For questions 1-5, X1, X2, ... , X23 is a random sample from a distribution with mean μ = -1.02 and variance σ2 = 0.62.
For questions 5-10, X1, X2, ... , X28 is a random sample from a distribution with mean μ = -8.77 and variance σ2 = 1.28.
1. Find μx, the mean of the sample average.
2. Find σ2x, the variance of the sample average.
3. Find P(X ≤ -1.14).
4. Find P(X > -1.14).
5. Find P(-1.08 < X ≤ -0.94).
6. Find μx, the mean of the sample average.
7. Find σ2x, the variance of the sample average.
8. Find P(X ≤ -8.47).
9. Find P(X > -8.47).
10.Find P(-9.02 < X ≤ -8.64).
In: Math
Consider an experiment where you toss a coin as often as necessary to turn up one head.Suppose that the probability of having a tail is p(obviously probability of a head is 1−p).Assume independence between tosses.a) State the sample space.
b) Let X be the number of tosses needed to get one head. What is the support (possible values ofX)?
c) FindP(X= 1),P(X= 2) andP(X= 3).
d) Deduce the pmf of X from part c).
In: Math
Suppose you have to calculate the number of popping sounds popcorn does in each five-second interval. For example:
Interval | # of popping sounds |
1-5 sec | 7 |
6-10 sec | 6 |
11-15 sec | 5 |
Discuss what type of variables you have, such as
quantitative or qualitative, discrete or continuous, nominal,
ordinal, interval, or ratio.
There are two variables: 5 seconds interval and number of popping
sounds. Please describe them. Thank you.
In: Math