In: Math
You would like to make a nutritious meal of eggs, edamame and elbow macaroni. The meal should provide at least 30g of carbohydrates, at least 20g of protein, and no more than 60g of fat. An egg contains 2g of carbohydrates, 17g of protein, and 14g of fat. A serving of edamame contains 12g of carbohydrates, 12g of protein and 6 g of fat. A serving of elbow macaroni contains 43g of carbohydrates, 8g of protein, and 1g of fat. An egg costs $2, a serving of edamame costs $5, and a serving of elbow macaroni costs $3. Formulate a linear optimization model that could be used to determine the number of servings of egg, edamame, and elbow macaroni that should be in the meal in order to meet the nutrition requirements at minimal cost.
In: Math
Question 10:
The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mean of 494 and a standard deviation of 39.
According to the standard deviation rule, approximately 68% of the students spent between $_____ and $ ______ on textbooks in a semester.
Question 11:
The distribution of IQ (Intelligence Quotient) is approximately normal in shape with a mean of 100 and a standard deviation of 16.
According to the standard deviation rule, _____ % of people have an IQ between 52 and 148. Do not round.
Question 12:
The distribution of IQ (Intelligence Quotient) is approximately normal in shape with a mean of 100 and a standard deviation of 19.
According to the standard deviation rule, only ______ % of people have an IQ over 157.
Question 13:
The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mean of: μ= 429 and a standard deviation of: σ= 23.
According to the standard deviation rule, almost 16% of the students spent more than what amount of money on textbooks in a semester?
In: Math
Running times (Y) and maximal aerobic capacity (X) for 14
female
Runners. Data collected for running times and maximal aerobic
capacity are listed
below
X: 61.32 55.29 52.83 57.94 53.31 51.32 52.18 52.37 57.91 53.93
47.88 47.41
47.17 51.05
Y: 39.37 39.80 40.03 41.32 42.03 42.37 43.93 44.90 44.90 45.12
45.60 46.03
47.83 48.55
(a) Calculate the mean, median, MAD, MSD, and standard deviation
for each
variable. ? [Include all your steps and explain all the steps
involved in details]
(b) Which of these statistics give a measure of the center of data
and which give a
measure of the spread of data? [Explain in your own words]
(c) Calculate the correlation of the two variables and pro-duce a
scatterplot of Y
against X. [Use excel for scatterplot, show all your computations
concerning
the correlation and explain all your steps]
(d) Why is it inappropriate to calculate the autocorrelation of
these data? [Explain in
your own words]
PLEASE SHOW ANSWER WORKED CALCULATIONS ON EXCEL AS PER QUESTION REQUIREMENTS.
In: Math
Do you want to own your own candy store? Wow! With some interest in running your own business and a decent credit rating, you can probably get a bank loan on startup costs for franchises such as Candy Express, The Fudge Company, Karmel Corn, and Rocky Mountain Chocolate Factory. Startup costs (in thousands of dollars) for a random sample of candy stores are given below. Assume that the population of x values has an approximately normal distribution.
| 91 | 179 | 130 | 91 | 75 | 94 | 116 | 100 | 85 |
(a) Use a calculator with mean and sample standard deviation keys to find the sample mean startup cost x and sample standard deviation s. (Round your answers to one decimal place.)
| x = | thousand dollars |
| s = | thousand dollars |
(b) Find a 90% confidence interval for the population average
startup costs μ for candy store franchises. (Round your
answers to one decimal place.)
| lower limit | thousand dollars |
| upper limit | thousand dollars |
In: Math
5.54 A survey by Frank N.Magid Associates revealed that 3% of
Americans are not connected to the Internet at home. Another
researcher randomly selects 70 Americans. a. What is the expected
number of these who would not be connected to the Internet at
home?
b. What is the probability that eight or more are not connected to
the Internet at home? c. What is the probability that between three
and six (inclusive) are not connected to the Internet at home?
5.51 An office in Albuquerque has 24 workers including management. Eight of the workers commute to work from the west side of the Rio Grande River.Suppose six of the office workers are randomly selected. a. What is the probability that all six workers commute from the west side of the Rio Grande?
b. What is the probability that none of the workers commute from the west side of the Rio Grande?
c. Which probability from parts (a) and (b) was greatest? Why do you think this is?
d. What is the probability that half of the workers do not commute from the west side of the Rio Grande?
In: Math
Alice and Bob are supposed to meet in the cafeteria. Alice
arrives at a random time between
noon and 1pm, and wait for 15 minutes upon her arrival and then
leaves. Bob also also arrives
at a random time between noon and 1 pm, but waits up to 20 minutes
and then leaves.
(a) What is the probability that Bob arrives before 12:20?
(b) What is the probability that Alice and Bob meet?
(c) If Bob arrives later than Alice, what is the probability that
they meet?
(d) Suppose that Alice and Bob have managed to meet. What is the
probability that Bob
has arrived before 12:20?
In: Math
Consider randomly selecting a student at a large university. Let A be the event that the selected student has a Visa card, let B be the analogous event for MasterCard, and let C be the event that the selected student has an American Express card. Suppose that P(A) = 0.6,P(B) = 0.4,and P(A ∩ B) = 0.3,suppose that P(C) = 0.2,P(A ∩ C) = 0.12,P(B ∩ C) = 0.1, and P(A ∩ B ∩ C) = 0.08.
a)What is the probability that the selected student has at least one of the three types of cards?
b)What is the probability that the selected student has both a Visa card and a MasterCard but not an American Express card?
c)Calculate P(B | A)and P(A | B).
P(B | A)=
P(A | B)=
d)If we learn that the selected student has an American Express card, what is the probability that she or he also has both a Visa card and a MasterCard?
e)Given that the selected student has an American Express card, what is the probability that she or he has at least one of the other two types of cards?
In: Math
In: Math
A bias coin has the probability 2/3 of turning up heads. The
coin is thrown 4 times.
(a) What is the probability that the total number of heads shown is
3?
(b) Suppose that we know that outcome of the first throw is a head.
Find the probability
that the total number of heads shown is 3.
(c) If we know that the total number of heads shown is 3, find the
probability that the outcome
of the first throw was heads.
In: Math
At a Midwestern business school, historical data indicates that 70% of admitted MBA students ultimately join the business school’s MBA program. In a certain year, the MBA program at the University admitted 200 students.
a. Find the probability that at least 150 students ultimately join the MBA program.
b. Find the probability that no less than 135 and no more than 160 students finally join the MBA program.
c. How many students should the MBA program expect to join the program?
d. What is the standard deviation of the number of students who will join the MBA program? e. Let X be the number of students out of 200 who will join the program. Would the empirical rule apply to the probability distribution of X in this case?
In: Math
A population of young people was studied where the variable weight has an average of 60 kilograms. The standard deviation is 5 kilograms, and the serura variable presented an average cone of 1.70 meters and its standard deviation 10 centimeters. Calculate the probability of finding young people weighing over 58 kilograms and measuring less than 1.80 meters.
In: Math
Assume the resting heart rates for a sample of individuals are normally distributed with a mean of 85 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities.
a. The relative frequency of rates less than 125 using the 68-95-99.7 rule is ____________.
b. The relative frequency of rates greater than 105 using the 68-95-99.7 rule is ___________.
c. The relative frequency of rates between 45 and 85 using the 68-95-99.7 rule is _____________.
In: Math
Consider a population of 10241024 mutual funds that primarily invest in large companies. You have determined that muμ, the mean one-year total percentage return achieved by all the funds, is 8.408.40 and that sigmaσ,the standard deviation, is 3.503.50. Complete (a) through (c). a. According to the empirical rule, what percentage of these funds is expected to be within ±33 standard deviations ,deviations of the mean? 99.799.7% b. According to the Chebyshev rule, what percentage of these funds are expected to be within
±22 standard deviations of the mean? -75.075.0% (Round to two decimal places as needed.)
***** c. According to the Chebyshev rule, at least
88.8988.89%
of these funds are expected to have one-year total returns between what two amounts?
Between_ and _.
In: Math
Use the following data to conduct a Chi-square test
for each region of the company in the same manner you viewed in the
video:
RegionExpected
Actual
Southeast
Defined
10098
Open
100104Northeast
Defined
150188
Open
150214Midwest
Defined
125120
Open
125108Pacific
Defined
200205
Open
200278
Step 3:
Write an 800–1,000-word essay, utilizing APA
formatting, to discuss the following:
Describe why hypothesis testing is important to
businesses.
Report your findings from each Chi-square test that
you conducted.
Based solely on the Chi-square test, discuss whether
the company should accept the null hypothesis in each region or
reject it in favor of the alternate hypothesis.
Discuss any other statistical analyses you would want
the company to contemplate before deciding if it will go with a
defined or open sales strategy.
Describe and discuss at least 1 other business
scenario in which you believe Chi-square testing would be
h
In: Math